Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf8999ba73003e42…

MALICIOUS

PDF

44.9 KB Created: 2020-08-24 15:45:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 11fecd1ef5ae5c4d31695945c88d90dc SHA-1: a47175b6abec378b399fbf0d0033bfb9bf6b3515 SHA-256: bf8999ba73003e4272bcb6673494b500ad20b493ccb7dd8b4f72ec30a7be25c7
242 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a malicious redirector link to 'ttraff.cc' which is associated with credential harvesting. The document body and heuristics indicate a lure for MFA or one-time code harvesting, consistent with phishing campaigns. The presence of numerous external PDF links suggests an attempt to create a link farm for SEO poisoning or to distribute further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • 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=cara+mengisi+e+reporting+tax+amnesty In PDF document text
    • http://files.babybluebeebunnies.com/uploads/1/3/0/7/130738875/103a6b895.pdfIn PDF document text
    • http://files.baycollisiontowing.com/uploads/1/3/1/8/131856158/gezowujururofif_kefomereba_durutepez_gizibuj.pdfIn PDF document text
    • http://files.ladypatriotssoccer.com/uploads/1/3/0/8/130813701/ed0dbb99f9b10b.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/1/0431/6702/3253/files/48350250383.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/0531/3946/files/confrontation_matrix_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1814/8261/files/lejubenerokazibunuli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5000/0796/files/77608172636.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5003/2549/files/jomesejilimirapu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2026/3322/files/54409232160.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6702/2239/files/nenudeva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7287/9773/files/employment_application_form_word.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3671/0824/files/gipinuxabodoxojoxodikojaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4070/1606/files/car_value_guide_perth.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006578.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6578 5088 bytes
SHA-256: a4868d2d470420df59b5b3d73f83748ffcb13fb51a0c93a3393fa46f5995cb15
font_01_sfnt_off000076b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76B6 9832 bytes
SHA-256: babab4cd50161f9c1a825defd8d6f24955d48238aee9fc5c5218e62a05a067d7
font_02_sfnt_off00009865.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9865 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c