Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5f437c87c8924d7…

MALICIOUS

PDF

43.4 KB Created: 2020-07-30 03:50:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7b14e412d948de37dc6801086c6b0ba5 SHA-1: c830e404f90d4b9851c5ffd805abf9bca21b36de SHA-256: a5f437c87c8924d7d1991c9c06275fe8dc7e5323f145aaa29092cf22bd788a69
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on 'cdn.shopify.com'. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool sometimes used to create malicious documents. The primary attack vector appears to be directing users to a malicious URL that likely serves further malicious content or phishing pages.

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=penanganan+diare+pada+bayi+pdf In PDF document text
    • http://files.janansiam.com/uploads/1/3/0/7/130739069/ritugixiduwev-xitoxid-pipatasituxur-bivaviw.pdfIn PDF document text
    • http://files.hoothootpost.com/uploads/1/3/2/7/132712234/lekekotijezagoniji.pdfIn PDF document text
    • http://files.hannahbhiggins.com/uploads/1/3/0/7/130776130/2563337.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/1/0428/9835/8432/files/18410569865.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0279/7986/files/lofavanijopowijudosad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8672/5795/files/44000367112.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1645/2258/files/81527394074.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7240/6179/files/17065837499.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1373/3533/files/13213647465.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4956/6886/files/89628813645.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5064/7204/files/tukemoxodukiworisinerol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7735/4143/files/82492410178.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1823/0688/files/77854811400.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6231/3631/files/62348272528.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4749/2506/files/17010330016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0669/7367/files/ligorolesosawigijufo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5314/5495/files/bifanowa.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 5

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_off00006e24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E24 4840 bytes
SHA-256: 4ccad652fd74109a0a87481821b37bb89a2cb919e8524493212baff409fe6b77
font_01_sfnt_off00007e97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E97 9908 bytes
SHA-256: c416d1dc138579d74fd876ba02843062f2579f131b97950415f8c90bd99f47c8

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