Malicious PDF — malware analysis report

Static analysis result for SHA-256 5101cabefe539491…

MALICIOUS

PDF

38.4 KB Created: 2020-08-21 23:15:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0d58a43c33ac7150b97163b07ec8da3b SHA-1: 5a88d820905cbeb5da57739a6d9b6540aa527404 SHA-256: 5101cabefe53949138e575690fceb173ae17142c512d1de77b0fb21d16b7ccf6
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.cc) known for malicious activity. The document body itself is heavily obfuscated but contains references to 'air attack apk android', suggesting a lure for potentially malicious mobile applications. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to harmful content.

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=air+attack+apk+android In PDF document text
    • http://gozef.aayogaandwellness.com/uploads/1/3/1/4/131454215/f86768f5ace2.pdfIn PDF document text
    • http://files.coachlightconnections.com/uploads/1/3/1/3/131379833/5627330.pdfIn PDF document text
    • http://files.tmjempowers.com/uploads/1/3/0/8/130874067/8941749.pdfIn PDF document text
    • http://files.wickedgoodnews.org/uploads/1/3/0/7/130740349/midexeguwanaju-jobogegoka.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/1/0434/9542/4165/files/78441866102.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/5110/2887/files/the_day_that_never_comes_tab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8027/8426/files/kavarirotalarorepom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/autoimmune_blistering_disease.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1960/7962/files/casio_fx_82ms_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0978/5499/files/jipidimubetu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5533/0981/files/50354901565.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7731/2411/files/bugapas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/2127/5033/files/public_desire_platform_trainers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1975/4907/files/49603847521.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004644.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4644 4912 bytes
SHA-256: f11f7c7409e0dcffb03dca97de2d945ba7fe951557ff291b5b2de6b367cf0b25
font_01_sfnt_off000056f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56F6 9536 bytes
SHA-256: 23212506d98000a7bdf252911cbacfe06666a0856df7b7e1b5eaf998c4955ee1
font_02_sfnt_off000077e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77E0 16092 bytes
SHA-256: 39b2f4b99ee08965fd4836f89f628a00cde8346cb181131bba0308e80db8fb67

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