Malicious PDF — malware analysis report

Static analysis result for SHA-256 9553251241a52265…

MALICIOUS

PDF

46.4 KB Created: 2020-08-02 18:06:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ac4a5b942b4683cd0dacbe5bbad302c9 SHA-1: c420607b44702bd0214e88057820d1a87c6dabde SHA-256: 9553251241a52265ef89c9942dbf7845248e577f4f831858aba7a908b3097587
214 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=black+and+decker+iron+manual'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs hosted on platforms like Shopify. The document body also contains text suggesting a callback lure, consistent with phishing or tech-support scams. The primary attack vector appears to be directing users to malicious infrastructure via embedded links.

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.
  • 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.ru/pify?keyword=black+and+decker+iron+manual In PDF document text
    • http://files.plazaproduce.com/uploads/1/3/1/3/131383426/vizafazemudojopa.pdfIn PDF document text
    • http://files.spiritofexcellenceworldwide.com/uploads/1/3/1/6/131637081/bagotupem.pdfIn PDF document text
    • http://files.thewaterthieves.com/uploads/1/3/1/4/131406046/sajotebawemiban.pdfIn PDF document text
    • http://files.aedpresearch.com/uploads/1/3/0/8/130815228/jakuliz-ruzerojep.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/1/0433/5799/5160/files/44841073354.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9029/4437/files/wilozam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3137/9618/files/pebedukobekurigitejefu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8424/2337/files/vasilologodasoludusojewo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7192/2591/files/zifeporujodixuzizelupixef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6295/1077/files/miwogukabafifi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2748/9183/files/wenufomalidavanaduv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0953/2316/files/xunavi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4638/7367/files/6812911858.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_off000069a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69A1 4820 bytes
SHA-256: 239d3d98954282db35cfc555dda63ff2bc1c5c8f12fa5eb376d3dd16b73fa803
font_01_sfnt_off000079d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79D5 10824 bytes
SHA-256: 9bf93f7bb9cab970d37d2fad8a76a3f3fc8ccd71c2a5d2ee9fa4a004b6c0f42b
font_02_sfnt_off00009e97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E97 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c