Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0c23ba4e873f9f2…

MALICIOUS

PDF

47.2 KB Created: 2020-08-01 01:21:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e60c9626e3e621b7a2a5439dcedc3470 SHA-1: c134f87daa347f54193acde082bf358cd7f1e9d5 SHA-256: f0c23ba4e873f9f2982154d53f7e30e38ea070c4813e0e84ccb2eccf06fd5e87
222 Risk Score

Malware Insights

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

The PDF file contains a mass external link farm, with one critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text that appears to be a lure for a game ROM download, and also includes the malicious URL. The presence of numerous Shopify-hosted PDF links suggests an attempt to create a link farm for SEO poisoning or to obscure the malicious redirector.

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.
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=fire+emblem+thracia+776+rom In PDF document text
    • http://files.northlandlodge.com/uploads/1/3/0/8/130814081/2091157.pdfIn PDF document text
    • http://files.truewealthfg.com/uploads/1/3/1/4/131437834/jubodu-mavatiwodafi-tapavimowi.pdfIn PDF document text
    • http://files.gandaconsultinggroup.com/uploads/1/3/1/3/131380337/8205187.pdfIn PDF document text
    • http://files.iamcarlageorge.com/uploads/1/3/0/7/130738892/5501968.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/1/0432/2567/7982/files/72073868947.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3088/6053/files/14187243308.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2137/6410/files/2795207913.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0156/0737/files/56885680238.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5161/3336/files/dibibesirasikodizukadik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6489/3345/files/978423023.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1113/5894/files/fixidogeki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0191/3244/files/vegogujud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2729/1544/files/mesibikaremo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/76957488457.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9227/9460/files/58378944788.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3728/5797/files/tuzisekebedonaremov.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
🗂 Part of campaign: 4614california.com 3 samples

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007a68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A68 5188 bytes
SHA-256: c0c3fd4f38b59cfd48ecfd98384ba5fa2564eef1cbe64ec927437e1ec5263aa8
font_01_sfnt_off00008bec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BEC 10436 bytes
SHA-256: 48ac780a42db8bd32815c93a91707b79bf178b5cd5da8e226b8441faea5f1408