Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b1ab60561a8a8bb…

MALICIOUS

PDF

44.3 KB Created: 2020-07-31 14:05:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fbabecaf0b4fdc72adc32c7ade8b72f1 SHA-1: 2a303a2670874710980b91fa39c47714a40587ec SHA-256: 1b1ab60561a8a8bb600096913d39b3f098a87fb80c2f39d1f9753f903ce81d42
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, suggests a lure related to a 'bio data form for marriage pdf download'. The PDF also contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic, likely for SEO poisoning or to distribute further malicious content.

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.com/pify?keyword=bio+data+form+for+marriage+pdf+download In PDF document text
    • http://files.innovativestoneconcepts.com/uploads/1/3/1/4/131409677/2303186.pdfIn PDF document text
    • http://files.escalantelife.com/uploads/1/3/0/7/130775403/xemigijalorafotug.pdfIn PDF document text
    • http://files.rikrecruitment.com/uploads/1/3/0/9/130969218/vanodubegetajal.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/1/0429/0461/7119/files/mavuparugapo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5463/5937/files/12118968225.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5205/6227/files/73384440099.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9985/7823/files/xinifoximanukawofifer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6838/3641/files/79463720403.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7783/6703/files/jawovanevu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2597/2904/files/99074520255.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4636/2533/files/wawebovawotevup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5797/1362/files/75449873310.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6781/0726/files/borutadukamip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3349/1613/files/72162606152.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 8

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_off0000702a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x702A 5112 bytes
SHA-256: 672d749ce2e10fc1ff2bd9f6f7a7e34f230c9de14ec40eab56ec0ba8ed901cd2
font_01_sfnt_off00008181.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8181 10176 bytes
SHA-256: 20d7f96fc937a34cc72f9206ccfe158346fe0273529d8e40ffb6325ab5fb8820

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