Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7c5a3404f67696c…

MALICIOUS

PDF

42.5 KB Created: 2020-08-18 22:58:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c5f196fd2c62621e43cfc271f9adb51a SHA-1: 57fc908fb4dd3a5c391163d654a82581be3f2f70 SHA-256: f7c5a3404f67696c46b442b95b1a9310de5a3f1abf7a4ffdd0731f6da4b3870e
214 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific malicious redirector URL, suggesting a lure to a phishing or malware distribution site. The document body, though partially corrupted, contains text related to 'L1a visa interview questions and answers' and the malicious URL, indicating a phishing pretext. The presence of numerous links to external PDFs, many hosted on Shopify, points to a link farm used for SEO poisoning or traffic redirection.

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=l1a+visa+interview+questions+and+answers In PDF document text
    • http://files.joyhakim.com/uploads/1/3/1/4/131453194/8954424.pdfIn PDF document text
    • http://files.danielsphoto.net/uploads/1/3/2/7/132710748/vupuliluravi-xuzolesoju.pdfIn PDF document text
    • http://files.asharpcookie.com/uploads/1/3/0/8/130814351/zodatawun.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/1/0432/9917/6612/files/jadugolu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0975/9640/files/pasonurunevemesodobatima.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5668/5468/files/23850285097.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3626/2052/files/projected_balance_sheet_for_bank_loan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8762/5369/files/what_the_hell_avril_lavigne_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4434/7802/files/47178909246.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/77160317291.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7047/9768/files/14938750050.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2285/9943/files/messenger_video_to_phone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6656/4520/files/lajokikiruwomomezim.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 2

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_off00006822.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6822 5060 bytes
SHA-256: 7bc830d8c871b1d4b2d055eb5bd362259bf8517e6254b8312770ab7bdab6bd20
font_01_sfnt_off00007979.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7979 10516 bytes
SHA-256: 42592edd6ec44414687522aefe08771ce8623cebc4c8b92062aabd8bf50d3023

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