Malicious PDF — malware analysis report

Static analysis result for SHA-256 99f4fcce14880c7e…

MALICIOUS

PDF

49.6 KB Created: 2020-10-26 01:43:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 14d4bcd2eb94c3e8862f2a58f38fa0b7 SHA-1: f5a0e71a0e498eb540ae5576d2a8d8648669b283 SHA-256: 99f4fcce14880c7efa39d15a5258f1ff55a15f0cb77314e9063873ef7a354310
202 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ggtraff.ru/pify?keyword=heralds+of+ruin+8th+edition+pdf In PDF document text
    • https://vonubaxuted.weebly.com/uploads/1/3/1/4/131452839/xulovaka_suwozamumano_miwigifozun_jalatalexame.pdfIn PDF document text
    • https://kuvofexe.weebly.com/uploads/1/3/1/1/131163751/3727472.pdfIn PDF document text
    • https://fibigator.weebly.com/uploads/1/3/4/3/134313363/gopuzobatitaku.pdfIn PDF document text
    • https://lotagixowila.weebly.com/uploads/1/3/1/1/131164100/balibusoxuriduze.pdfIn PDF document text
    • https://debemalimuwu.weebly.com/uploads/1/3/4/3/134385929/zawilikiluz.pdfIn PDF document text
    • https://lapebezufidasaz.weebly.com/uploads/1/3/4/3/134316617/kojoliwojuzi.pdfIn PDF document text
    • https://remewizefo.weebly.com/uploads/1/3/1/8/131856163/e0eeb842ca1bb.pdfIn PDF document text
    • https://���www.faceboo...74770622883203/In PDF document text
    • https://���www.faceboo...30967353914015/In PDF document text
    • https://���www.faceboo...ps/HoRIGupdate/In PDF document text
    • https://���www.faceboo...23666964593846/In PDF document text
    • https://���www.faceboo...03070356742614/In PDF document text
    • https://���www.faceboo...31709693644738/In PDF document text
    • https://���www.faceboo...50616518364230/In PDF document text
    • https://���www.faceboo...16055315315735/In PDF document text
    • https://���www.faceboo...74274899485742/In PDF document text
    • https://���www.faceboo...ps/HoRDWupdate/In PDF document text
    • https://���www.faceboo...35480353410987/In PDF document text
    • https://���www.faceboo...69264246672248/In PDF document text
    • https://���www.faceboo...23027831811365/In PDF document text
    • https://���www.faceboo...65096760421646/In PDF document text
    • https://���www.faceboo...09996772566998/In PDF document text
    • https://���www.faceboo...24740194495283/In PDF document text
    • https://���www.faceboo...18883721643522/In PDF document text
    • https://���www.faceboo...88552131454233/In PDF document text
    • https://���www.faceboo...49757738639337/In PDF document text
    • https://���www.faceboo...s/HoRInqupdate/In PDF document text
    • https://���www.faceboo...83803461804433/In PDF document text
    • https://���www.faceboo...34954850110208/In PDF document text
    • https://���www.faceboo...32724883744681/In PDF document text
    • https://���www.faceboo...01551440126109/In PDF document text
    • https://���www.faceboo...42035369429316/In PDF document text
    • https://���www.faceboo...94074337472085/In PDF document text
    • https://���www.faceboo...99090663895129/In PDF document text
    • https://���www.faceboo...35503709829286/In PDF document text
    • https://���www.faceboo...21859854713727/In PDF document text
    • https://���www.faceboo...27029020771438/In PDF document text
    • https://���www.faceboo...77220159002456/In PDF document text
    • https://���www.faceboo...02744146433242/In PDF document text
    • https://���www.faceboo...92052677813242/In PDF document text
    • https://���www.faceboo...85671395214381/In PDF document text
    • https://���www.faceboo...12557782475598/In PDF document text
    • https://���www.faceboo...56833221123247/In PDF document text
    • https://���www.faceboo...99500836982100/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1130/8702/files/the_hindu_trinity.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8091/8203/files/walomapomunowupideberim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/9679/8912/files/43843573750.pdfIn PDF document text
    +18 more URL(s)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ab2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AB2 5284 bytes
SHA-256: 08154069b5c7a664b5b7faabe58d8efaf35f25bb135604fa6ffbe6ef36b6d40c
font_01_sfnt_off00007c9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C9C 11472 bytes
SHA-256: a721fa4ed4eb29816a0f1ffe7f6737a21bdea894fc658bd384ec2a0d51995b21
font_02_sfnt_off0000a262.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA262 16060 bytes
SHA-256: 5b0d2701ab39d2f69c66d7d16c60d8db0b323aa0832947137e757b5401d27330