Malicious PDF — malware analysis report

Static analysis result for SHA-256 158842f359d70f54…

MALICIOUS

PDF

43.1 KB Created: 2020-08-17 17:05:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: abc6b39e4fa7cbae887319408ed502bd SHA-1: 7682d3beddfb666cd85ffd8cdc8a0d63e6a4f301 SHA-256: 158842f359d70f54e1d32b5478a3e2fa25bbabea052644ef7166f5a8d778ffab
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1204.002 Malicious Link

The PDF contains a lure related to hacking WiFi passwords, impersonating Facebook, and directs users to a malicious redirector. The document body and heuristics indicate a credential phishing attempt. The embedded links are part of a link farm designed to appear as legitimate content, likely to improve search engine ranking for malicious lures.

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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://ttraff.cc/pify?keyword=hack+wifi+password+wpa+android.
  • 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=hack+wifi+password+wpa+android In PDF document text
    • http://files.thefraternalsociety.org/uploads/1/3/1/6/131606605/sotinulo_sosajosugukurig.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6160/6550/files/lukadasi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6834/8830/files/tenusiwojitosak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4324/8545/files/instrumen_penilaian_akreditasi_puskesmas_terbaru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/natenojutuwab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/runuwadobona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1731/3178/files/zupimofakepukararoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8027/7406/files/44049551990.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2690/6261/files/mcanisme_d_accouchement_normal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1446/3394/files/4101871661.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E3D 4824 bytes
SHA-256: 6d2c0b8beb8b53a35e5310df908874602e7184c7ef1cf4c24e62007698c4c0ee
font_01_sfnt_off00006ead.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EAD 10216 bytes
SHA-256: 018c9567d469d09b7e5f391f6e6aa2054b155bb9acd344a91f8cad9ebd4556fe
font_02_sfnt_off000091a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91A7 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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