Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d2ccd8998110141…

MALICIOUS

PDF

50.4 KB Created: 2020-08-21 22:32:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 20a4fd8e79a9dacaf96898b3f3d1b0fe SHA-1: 73ab303c82346950f7d301f5eb465eeb33763f29 SHA-256: 0d2ccd899811014182163b0e28ee26bea9ebca30889d63e4f7f76217da2e37fd
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to a redirector service, and is flagged as a malicious redirector and SEO link farm. The document body and embedded link data explicitly mention 'best free anti malware for android', suggesting a lure for phishing or malware download. The presence of embedded URLs and the ML classifier's high confidence further support this assessment.

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/pify?keyword=best+free+anti+malware+for+android In PDF document text
    • http://files.bluedolphinphuket.com/uploads/1/3/0/7/130739377/4afffe0da5.pdfIn PDF document text
    • http://files.monsterinktattoostudio.com/uploads/1/3/0/7/130775396/867426.pdfIn PDF document text
    • http://files.wisepennymarketing.com/uploads/1/3/1/6/131636612/6914354.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2758/6457/files/dutobudewikajelalutamuzu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3732/5472/files/powerpyx_until_dawn_trophy_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8421/0583/files/23425961699.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2685/8662/files/51824697901.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7252/8292/files/an_inspector_calls_essay_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wakorijupomimenupe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0313/4627/files/vogikatoremavafaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/2488/7456/files/commands_for_windows_command_prompt.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9400/7191/files/ziwajusejapipamidebagas.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 2

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007919.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7919 4984 bytes
SHA-256: 306a485597dfbda0e50426113c7f9917caed455c93a6b99e49319e186b6d03ac
font_01_sfnt_off000089f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89F9 10860 bytes
SHA-256: 2e40600c8061edfc95ef00a14d6cb7d1ba7d7556e16fb629dd4368047f578a43
font_02_sfnt_off0000ae51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE51 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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