Malicious PDF — malware analysis report

Static analysis result for SHA-256 057c59d4f6504ed0…

MALICIOUS

PDF

52.7 KB Created: 2020-10-27 09:20:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 4b3a7a576b9b107d7f67476216f5e8ad SHA-1: f03815de1ec0fd2da72c348b61d9254926ff1acb SHA-256: 057c59d4f6504ed058bc9eb69f7d7c7c1a8502db3f2837c5bfec0951136a370c
214 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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.link/pify?keyword=civil+contract+of+photography+review In PDF document text
    • https://gomemetunugup.weebly.com/uploads/1/3/2/7/132712315/desojepiliw-jakuxavinotovot-givijidupudu-wulunovu.pdfIn PDF document text
    • https://jufaxexave.weebly.com/uploads/1/3/0/7/130775513/ligoxeloterewubim.pdfIn PDF document text
    • https://kixatefibav.weebly.com/uploads/1/3/0/7/130776592/4877804.pdfIn PDF document text
    • https://febukorev.weebly.com/uploads/1/3/4/3/134325382/e6357.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00008f55.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00008f55.bin)
    • https://uploads.strikinglycdn.com/files/193bf725-337e-4efc-b982-4916cb4283eb/gavujitufazevomosak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30a28f38-4190-432f-8484-e04704cc2b6a/98922618815.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af1e6cdc-2736-4b75-8e6c-0a74611e0d89/wolupijaladaneme.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e034917-7d28-4bd5-95f7-eda8b52ccb6e/zovukodamuvura.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88a422e5-52cd-4886-bdc5-b79aa0eeb0a8/palakek.pdfIn PDF document text
    • https://s3.amazonaws.com/gagagakigibapo/koguxulezixepogin.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/zofazenidegazibupumok.pdfIn PDF document text
    • https://s3.amazonaws.com/vatosolikijike/arrl_handbook_2015_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4115/9333/files/dnd_5e_pixie_familiar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/7719/2865/files/rumerirebuputuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/2278/6975/files/79993261855.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/5974/0317/files/blackmart_apk_download_2018_v2.16.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8661/9819/files/bread_cutting_knife_with_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8555/3059/files/alphabet_worksheet_in_spanish.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7289/4629/files/negukimamefuxad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/3217/3480/files/information_security_risk_management_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/7903/1712/files/26121645187.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2440/7961/files/pokemon_amie_face_guide_xy.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/65166188701.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/nato_phonetic_alphabet_printable.pdfIn PDF document text
    • https://s3.amazonaws.com/purawuma/74483467159.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/vozozisaj.pdfIn PDF document text
    • https://s3.amazonaws.com/nagev/budget_planner.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 extracted file (font_00_sfnt_off00008f55.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008f55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F55 5260 bytes
SHA-256: 34a13139709299541427de4d90f46601a2140efa946738c37c457bc379fd5da1
font_01_sfnt_off0000a144.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA144 10296 bytes
SHA-256: 070728e4af1b7f645bf9597aa29ad0356914853290b0f8fca9e03ef55cdcb30a