Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a85a28ba10572a3…

MALICIOUS

PDF

45.5 KB Created: 2020-07-31 03:09:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bf8aff4a4de73e3091dcbe6a2f946ced SHA-1: 746106e36d37156dabb826d7721031e6ded49c38 SHA-256: 9a85a28ba10572a3ad4ebbf0256071de7497359aea78bee205ba33f1098bb1aa
234 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, a technique often used to create SEO spam or to redirect users to malicious sites. One critical heuristic firing indicates a direct link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'Buffalo wild wings takeout menu pdf', suggesting a lure to disguise the malicious intent. The primary malicious URL identified is ttraff.cc, which is used in conjunction with a keyword that mimics a legitimate search query.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • 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=buffalo+wild+wings+takeout+menu+pdf In PDF document text
    • http://files.fountainoflifeministrieshavelock.org/uploads/1/3/1/8/131871816/bf10e1.pdfIn PDF document text
    • http://files.cherylmccormackdancers.com/uploads/1/3/1/1/131163898/rubidas.pdfIn PDF document text
    • http://files.jjenterpriseslcd.com/uploads/1/3/1/3/131383953/abdacc.pdfIn PDF document text
    • http://files.olbsfamilies.org/uploads/1/3/1/6/131606546/235ad8e3.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/1/0437/7303/4658/files/tanudaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0935/9517/files/nirozonokot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9059/8305/files/80836117448.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7555/7793/files/rifixexune.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4185/7448/files/92745594302.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6356/5718/files/guxujefosaguduvi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6544/9371/files/bufekadumegasumotos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7231/3751/files/49528532276.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0111/6833/files/39847022450.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9819/3573/files/3495954263.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3510/6200/files/15126728593.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2705/4237/files/12857707110.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7948/3048/files/85781705537.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_off00007630.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7630 5352 bytes
SHA-256: d1b2127d079f7a5ddb4785f362ae81d1a954cef482310f529aa9096b36569aa7
font_01_sfnt_off0000886e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x886E 9528 bytes
SHA-256: 8ee05bbd939ce237b3e93b5691b6a61e578a90a117c0a059f53a0f46e083f7cc