Malicious PDF — malware analysis report

Static analysis result for SHA-256 a28092cf39f0888d…

MALICIOUS

PDF

51.1 KB Created: 2020-08-09 23:15:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c16abe01cdbae2876cceba0da1368308 SHA-1: cb6e1505f48f7144676ad120911154cb0435ba74 SHA-256: a28092cf39f0888d0a2901825875874b4783335f9b66000797f97a4b5a1ddb54
254 Risk Score

Malware Insights

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

The PDF file contains a lure related to 'Cracker Barrel breakfast menu prices' and embeds numerous links, including a critical link to a known malicious redirector at `https://ttraff.com/pify?keyword=cracker+barrel+breakfast+menu+prices+pdf`. The presence of a mass external PDF link farm and a callback phishing lure suggests the document is designed to direct users to malicious sites or engage them in a scam. No scripts were extracted from this sample.

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.
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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=cracker+barrel+breakfast+menu+prices+pdf In PDF document text
    • http://files.centerforexperimentalethnography.org/uploads/1/3/0/8/130874329/zezoguzuwaxerokena.pdfIn PDF document text
    • http://files.buffalozen.org/uploads/1/3/1/3/131382243/zubevuxoka.pdfIn PDF document text
    • http://files.finksdeli.org/uploads/1/3/2/7/132741222/5b0259.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/1/0429/8126/1466/files/openssl_sign_certificate_with_ca.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7023/4527/files/nuwawexonaxalab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9814/4932/files/80221351132.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0574/7108/files/kiwut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8729/6680/files/python_append_csv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/bejifiwevebilofupubixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8797/0975/files/javascript_filter_array_multiple_values.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6633/6166/files/86086095570.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0505/0008/files/madonujiwumafakod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7080/7459/files/64th_bpsc_mains_question_paper_download.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_off00007bd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BD2 5412 bytes
SHA-256: b8053e944b151862922f25513eaac474cc97207cdeac7e836070198081cc1ab7
font_01_sfnt_off00008e1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E1B 15880 bytes
SHA-256: a0658b4b43ebe2e172a1636b21ee4c9b813653d6adc97f0555176413047fda75