Malicious PDF — malware analysis report

Static analysis result for SHA-256 8160d1119a4ee14f…

MALICIOUS

PDF

41.8 KB Created: 2020-08-11 08:15:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 95c19c721dcfca6a03f137cfbb4dd55e SHA-1: 5d38c395993d9fe70d52372118f5ac57f50cb7e8 SHA-256: 8160d1119a4ee14f84cc9323b3a0d236c391ad75365d42851fb20d9b24312065
282 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous links to external resources, many of which are hosted on SEO link farms and redirect to malicious infrastructure. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' specifically flags the URL 'https://ttraff.cc/pify?keyword=aadhar+card+pdf+pass' as malicious. Additionally, the presence of 'SE_MFA_LURE' and 'SE_PASSWORD_ARCHIVE_LURE' heuristics suggests a phishing attempt, likely to harvest credentials or abuse multi-factor authentication. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 8

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=aadhar+card+pdf+pass In PDF document text
    • http://files.southernpressonline.com/uploads/1/3/2/7/132712530/b658a7c9c1.pdfIn PDF document text
    • http://toxod.newriverknockouts.org/uploads/1/3/0/8/130814328/229980.pdfIn PDF document text
    • http://benilosak.hootandahalf.com/uploads/1/3/1/3/131380600/vaworidefevawi.pdfIn PDF document text
    • http://files.bobgraysonart.com/uploads/1/3/1/3/131379353/3560873.pdfIn PDF document text
    • http://dimuwigo.theblacksmithexperience.com/uploads/1/3/0/7/130739024/pebekufojasasig.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/1/0431/5847/0807/files/xagerafosupijujenufowu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3651/5224/files/81979433934.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1969/7308/files/diferencia_entre_anabolismo_y_catabolismo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7754/1787/files/futowezatutaket.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0381/3781/files/43998931250.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1868/9434/files/5512898053.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6382/8895/files/78700793754.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5595/5619/files/wugutipa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1204/6491/files/31548519365.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7074/9861/files/metabolic_disorders_in_cattle.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7369/1045/files/faxowu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6604/1244/files/rogabenepamakawi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5017/1554/files/22586651274.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1926/2357/files/97820857301.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006604.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6604 5200 bytes
SHA-256: 759d56680eda2c5a512d4ff4205d766e24416aabf271e02e08cb2bfbde579d53
font_01_sfnt_off000077a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77A8 10216 bytes
SHA-256: c13560b6596571ae142add02d07739a18239a9bdbe61b36fea6078bfcae775e1