Malicious PDF — malware analysis report

Static analysis result for SHA-256 753019bc0739cce7…

MALICIOUS

PDF

39.8 KB Created: 2020-08-19 14:49:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0521eadaeebeefb07aaa2cf11e02116b SHA-1: ff9f8425f2c735fad519354154beb9b2f2be2e47 SHA-256: 753019bc0739cce7080c1f6999c23acdd520a5dad3b1c3979292eed047ce704e
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including a redirector link to "https://ttraff.com/pify?keyword=cartoon+video++mp4+3gp", and a link to an algorithmically generated URL. These links are likely intended to lead the user to malicious content or phishing sites. The presence of multiple external PDF links suggests a link farm or SEO manipulation tactic to drive traffic to potentially harmful destinations.

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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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=cartoon+video++mp4+3gp
    • http://files.mi-sheffield.com/uploads/1/3/1/6/131606368/niludavifek_rerodotite.pdf
    • http://renibudo.littlejoysremembrancefoundation.org/uploads/1/3/1/6/131606490/japasudeku.pdf
    • http://luvukida.severndale.org/uploads/1/3/0/8/130874655/vimosadeda.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/4465/0651/files/14649236657.pdf
    • https://cdn.shopify.com/s/files/1/0432/3383/7219/files/lumero.pdf
    • https://cdn.shopify.com/s/files/1/0429/1090/8572/files/30604025245.pdf
    • https://cdn.shopify.com/s/files/1/0437/4793/4359/files/silevokunepum.pdf
    • https://cdn.shopify.com/s/files/1/0431/5178/6135/files/ragesodajilisel.pdf
    • https://cdn.shopify.com/s/files/1/0434/0236/3045/files/biological_wastewater_treatment_process.pdf
    • https://cdn.shopify.com/s/files/1/0447/9759/1701/files/convert_xls_to_xlsx.pdf
    • https://cdn.shopify.com/s/files/1/0431/5784/8224/files/gugabozidupux.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005cff.bin
7dfe9cd10b7d1ef35f82296e6f1909267b03fd0bd0c67b5bcaa4e478b3b2e992		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CFF 5288 bytes
font_01_sfnt_off00006ef5.bin
749d7a75b81363f25d5e0022c54fdf855e144d4bcd467bc428888f5660dc8875		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EF5 10804 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.