Malicious PDF — malware analysis report

Static analysis result for SHA-256 f44b3e2455a23693…

MALICIOUS

PDF

40.7 KB Created: 2020-08-02 05:00:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f5540b06869bef408b2cdba8843f8c4b SHA-1: f0a11e60eca4438540e9b67ed380a6a328feb0a1 SHA-256: f44b3e2455a236938f7261bd46eac6296204936c0d9cc46c678b16e30a009795
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass external link farm, with one critical link pointing to a known malicious redirector infrastructure. The document body, though obfuscated, contains the text 'How to add user on mac' and the malicious URL 'https://ttraff.cc/pify?keyword=how+to+add+user+on+mac', indicating a social engineering lure to trick users into clicking the link. The ML classifier also strongly flagged this PDF as malicious.

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.cc/pify?keyword=how+to+add+user+on+mac In PDF document text
    • http://files.lukeolson.com/uploads/1/3/0/9/130969218/83aa27d3.pdfIn PDF document text
    • http://files.timtosuccess.com/uploads/1/3/1/6/131606490/midiv-dubururunawux.pdfIn PDF document text
    • http://files.driving--lessons--worcester.co.uk/uploads/1/3/2/6/132696113/xajalodu.pdfIn PDF document text
    • http://files.cvgc1991.org/uploads/1/3/2/6/132696580/tiwujimobiwe-rimijewojofaxen-zekufizupus-gabadezumaxo.pdfIn PDF document text
    • http://files.fultonccgolf.com/uploads/1/3/1/4/131437275/nevewik-vanofo-majovikitifa.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/1/0432/2715/2539/files/nusuvijiganeso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/14981909947.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9114/8444/files/57384425560.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1926/3397/files/the_walking_dead_s06e03_kickass.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gekubamunanapomokavonata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8013/8398/files/dovebowunelukulepu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6859/6123/files/wuwukawivemuwiviro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7455/0950/files/gta_4_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5637/3670/files/vaxerizafobep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3431/1845/files/37758392417.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 7

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_off00006187.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6187 5104 bytes
SHA-256: 7373496630f5f5dae4c05ca0cab5eb4a5c2329b296df8541dd5c2065a029fefc
font_01_sfnt_off000072e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72E0 10272 bytes
SHA-256: 8a1ffd811b7b3b5023956e388e5b59649c70b0e984da24a131c483506e25ca7e

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