Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f640602e7a00c14…

MALICIOUS

PDF

45.6 KB Created: 2020-08-23 22:26:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 75eeb13128eed1dc1de345aa3a4216e4 SHA-1: aead2ce38b12543b9aad46d4472bdecfc0410fe1 SHA-256: 6f640602e7a00c14d39eea89cf8ca91a6eb46ccee5ebf4c26e9da36c1662611e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service that is flagged as malicious. The document body, though heavily obfuscated, contains a URL that appears to be the primary lure, directing users to a potentially malicious site. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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=aankhein+teri+kitni+hasi+whatsapp+status In PDF document text
    • http://files.skmusicboosters.org/uploads/1/3/1/3/131380728/40bc57e2dcdb.pdfIn PDF document text
    • http://files.hypnobabiesboston.com/uploads/1/3/2/6/132695586/nigidigukirek.pdfIn PDF document text
    • http://files.discoverhispresence.com/uploads/1/3/0/8/130874058/7867916.pdfIn PDF document text
    • http://files.richlandarts.com/uploads/1/3/1/4/131406453/e49a71c3.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/1/0440/2518/4421/files/2061272534.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0881/0398/files/25700935610.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/gijixometopadipa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/2283550224.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5581/5583/files/doraemon_cartoon_free_mp4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9902/1717/files/sodevubuvoxidu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tizisixurodegu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5747/0870/files/76208820364.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1234/9334/files/61291058345.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3028/9311/files/17183638038.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1687/0298/files/aptoide_apk_indir_android_oyun_club.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B58 4792 bytes
SHA-256: 5260aa1b2348d1624af25b42df195698dba3595dbfd1d32a322b2e1a3e84285a
font_01_sfnt_off00005b94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B94 2044 bytes
SHA-256: 9812099c5b295b859b411b79c63ef0f3e15cad7fffbe3efb0a8bc6b6c1165317
font_02_sfnt_off00006500.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6500 9564 bytes
SHA-256: 68b1654bdc7bb9d8849d66802e698f2ae7fd2bc668be968242f42ace08be94fb
font_03_sfnt_off000085e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85E4 16060 bytes
SHA-256: bb4620ae2308066493f479cb0495314a41e91f5b0bfb2a754d9bad2ef34af03d
font_04_sfnt_off00009a7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A7A 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378