Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9885fa991c102a1…

MALICIOUS

PDF

34.5 KB Created: 2020-08-03 00:25:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c164b42edca98ab36dc71304ace3847f SHA-1: 746702cdd29a69bd7bf35f16f874055d1b6258c0 SHA-256: d9885fa991c102a1aae67a88a22cc88fd3eff70aad70086df7e91fe68b11783c
214 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific redirector URL, indicating a likely phishing or scam attempt. The document body, though heavily obfuscated, contains the target URL and keywords related to Craigslist, reinforcing the lure. The presence of multiple embedded links to external PDFs, some hosted on Shopify, suggests an attempt to distribute malicious content or redirect users to malicious sites.

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.com/pify?keyword=craigslist+org+rochester+ny In PDF document text
    • http://files.rotboxrustorations.com/uploads/1/3/1/3/131397987/2849910.pdfIn PDF document text
    • http://files.j-6forge.com/uploads/1/3/0/8/130874304/290f7d384ca5.pdfIn PDF document text
    • http://files.hkssdebating.com/uploads/1/3/2/8/132814476/6418385.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/1/0428/8138/4604/files/10128938913.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7931/1253/files/25921462978.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4459/2021/files/pogixefa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3097/7431/files/298648014.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8911/6836/files/dadixipefakotax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1392/2206/files/rexawijowep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pigirerunozekolufis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7175/7718/files/9258940519.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2560/3488/files/15825435442.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/nuwezipiraxanetunazinemi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7730/4484/files/40487041578.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4474/8950/files/17475691934.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6608/7838/files/wiwobomadumowo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0523/8692/files/rewaxonoladudizetexi.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 8

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_off00004b28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B28 5068 bytes
SHA-256: 0da643901f42653b2ffba06a7b033751bae0cf325d751899d98d197b7e040d2f
font_01_sfnt_off00005c62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C62 9476 bytes
SHA-256: 130091a46774c58c012cbc244a14d2810c1cdf2341f851047bdc61c2e3fe7d09

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