Malicious PDF — malware analysis report

Static analysis result for SHA-256 afbf6a0a020ef05b…

MALICIOUS

PDF

46.3 KB Created: 2020-07-28 11:08:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-04
MD5: 260d8b308de2445a16725670bb2fafbb SHA-1: 9109a176026f2e8fccaf1805144be8f65cbd0a9b SHA-256: afbf6a0a020ef05b5b85f2bd5b2955037d7ad39a583198ca5d72e22371b80ecf
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded links, a common tactic for phishing or malware distribution. One critical heuristic indicates a malicious redirector link, specifically pointing to 'ttraff.cc' with a search query for 'jewish cookbook pdf'. This suggests a lure to trick users into clicking the link, likely leading to a malicious site or download. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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://ttraff.cc/wb?keyword=jewish%20cookbook%20pdf In PDF document text
    • http://files.wardahhannan.com/uploads/1/3/1/3/131384424/xorow-wasujezagaro-safozodoxuletuw.pdfIn PDF document text
    • http://files.inhimphotos.com/uploads/1/3/1/3/131384635/9497476.pdfIn PDF document text
    • http://files.exxar1.com/uploads/1/3/1/3/131398526/mofudosum.pdfIn PDF document text
    • http://files.thenutritionhutt.club/uploads/1/3/0/7/130739783/b4cc77fee8de86d.pdfIn 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/1/0428/7977/8979/files/35521711252.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0069/1862/files/xoduwazuxirepoxereri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5346/4214/files/laxeguxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5244/9444/files/zokizowapototu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6042/8962/files/76892971809.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7247/9647/files/76658529466.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1274/3591/files/juwenu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8323/5489/files/vizuronepupawelimuzam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4807/4396/files/xakejekeferopema.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4453/4429/files/solasopiposigir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1483/1780/files/8041267838.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/1741436775.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0672/2211/files/89646088465.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000777e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x777E 4792 bytes
SHA-256: fe185e252439479b031016fc2a45c7f1cf236a9add5fa451c78104bd6de35013
font_01_sfnt_off000087db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87DB 10608 bytes
SHA-256: 779001e5be63b10d59c45c5dab45fdd99ce8e0ff89e58e3510db212496f55108

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