Malicious PDF — malware analysis report

Static analysis result for SHA-256 56d94cfc7aa5dc71…

MALICIOUS

PDF

32.8 KB Created: 2020-08-21 22:44:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d3c2b14a4ad01955e62067b2978f5722 SHA-1: 1397b96f3b386a8b5eb759f4e7ebb1bbdafcedd3 SHA-256: 56d94cfc7aa5dc71d1ba88a2bd67fd51276840cfe429b8dab99b0a02b5891900
194 Risk Score

Malware Insights

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

The sample is a PDF file containing a significant number of embedded links. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic indicates that at least one link points to known malicious redirector infrastructure (ttraff.com). The PDF_SEO_LINK_FARM heuristic suggests a large number of external links, many hosted on cdn.shopify.com, which are likely used to artificially inflate search engine rankings or distribute malicious content. The ML_NYX_PDF_MALICIOUS classifier strongly supports the malicious nature of the file. No scripts were extracted, but the extensive link farm and redirector usage point towards a delivery mechanism for phishing or malware.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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=bala+song+ming In PDF document text
    • http://xekepad.roundbay.com/uploads/1/3/1/8/131856917/gosokomo.pdfIn PDF document text
    • http://files.mombabymelts.com/uploads/1/3/0/7/130775968/1449556.pdfIn PDF document text
    • http://files.silverswordgoldenretrievers.com/uploads/1/3/1/1/131163834/bb2d119ec.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/1/0431/5804/4827/files/26394485806.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7993/1806/files/speak_english_fluently_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7315/8806/files/letusovujevuge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0704/9877/files/bauhn_cordless_headphones_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9493/1624/files/fnma_student_loan_payment_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0484/4442/files/check_if_string_contains_substring.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1943/6195/files/labojomatid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1231/6584/files/woliriwejum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6181/4172/files/navunezutofejefefosexemer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2819/9062/files/45390285998.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

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000446a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x446A 4956 bytes
SHA-256: a323c95dbbc5f1b07151b56c6b31aae73102f76de822833e43d3fde27e68d56a
font_01_sfnt_off00005535.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5535 9888 bytes
SHA-256: 916bbad818432b4c2395c53d4b00955ef7583571fe089578bc5fe6e11e02750c

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