Malicious PDF — malware analysis report

Static analysis result for SHA-256 905ec387aa40f10c…

MALICIOUS

PDF

53.3 KB Created: 2020-08-15 07:57:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: aeab29ec82fcea5e59179dabec012093 SHA-1: ea5d6d32ae372a11eab81da36ca6b8fa4af76382 SHA-256: 905ec387aa40f10cbc68d07a1c148ae1e4733f11ff230beb90c53a474c3860ff
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, directing users to 'ttraff.com'. Additionally, it features a link farm with numerous external PDF links, many hosted on Shopify, suggesting an attempt to manipulate search engine results or distribute content. The ML classifier also flagged this PDF with high confidence. The embedded URLs and the structure indicate a phishing or redirection attempt.

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=chaupai+sahib+lyrics+pdf In PDF document text
    • http://xadudi.setthestagecostumesprops.com/uploads/1/3/0/7/130739777/2747267.pdfIn PDF document text
    • http://degepumi.uniteoffshore.net/uploads/1/3/2/8/132816091/jikekuv.pdfIn PDF document text
    • http://files.villinlannen.com/uploads/1/3/2/6/132683173/dobezib.pdfIn PDF document text
    • http://files.citycentrefitness.com/uploads/1/3/0/9/130968943/torejenorivelo-fisevute-lililaz-gekipunibinisu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8575/6568/files/kufizirivovowuxiliw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3293/6605/files/74374774848.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6345/2583/files/two_step_algebra_equations_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0412/5599/files/47462795521.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1352/8987/files/endorsement_of_cheque.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6252/4069/files/biology_book_12th_class.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2024/6427/files/fosoleparumifavaxumamo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9541/7237/files/nukenuliw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2127/9138/files/sisinesu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bijuwosozawubuvenokuzi.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://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006bcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BCC 5392 bytes
SHA-256: 7ce91406a98537421ded2137a739b94e0f4ceb6bc9af1a65d725a7ecc17fba8d
font_01_sfnt_off00007e12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E12 3740 bytes
SHA-256: 814992be763021c11dca23fed22b8bb7a0f9688c8b5af2f3d58b36f318d7b63c
font_02_sfnt_off0000898b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x898B 7756 bytes
SHA-256: dc2b740e27002eb4b29cbb7aa06ba5519f490267af68290cee566d0471d857f9
font_03_sfnt_off0000a441.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA441 9920 bytes
SHA-256: 79a372198d26e356fad83fd621404f1b5615e5e3d7dd378624bf527fbe329317