Malicious PDF — malware analysis report

Static analysis result for SHA-256 154d98fdcc13f982…

MALICIOUS

PDF

41.4 KB Created: 2020-08-14 00:27:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d7e265c494f6abbe32663f0cfade87fe SHA-1: e14e8fb3d7bb3b3c2bcf7dd4e9a551b95efcbb94 SHA-256: 154d98fdcc13f98225d530d0e8861f50ecc3041eecd82792de2ec4e366fe66c9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a lure for 'Whatsapp video call recording' which redirects to a malicious URL. The heuristic firings indicate the PDF is designed as a link farm and uses a redirector to known malicious infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to direct users to malicious content, likely for phishing or malware distribution.

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.com/pify?keyword=whatsapp+video+call+recording In PDF document text
    • http://files.northbaytheatrics.com/uploads/1/3/1/4/131483719/vafikodesige.pdfIn PDF document text
    • http://files.coffeesonme.com/uploads/1/3/1/4/131482941/nitizewerutefiz_fomiz.pdfIn PDF document text
    • http://files.countrysideanimalclinictooele.com/uploads/1/3/1/3/131380868/newufutuje.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/1/0428/9835/8432/files/41841620016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1474/8322/files/fozixowati.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6043/6887/files/lulabiwififiso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7665/7051/files/51449874748.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4884/3934/files/porenutu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3731/9590/files/37897992908.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3266/6524/files/arbor_buzzard_ffxiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6820/3942/files/jesubofupasivonamego.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9542/4165/files/cpa_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1916/6105/files/sezupozaxanubuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0458/3318/files/75692906268.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1682/1672/files/causes_of_anxiety_disorders.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 8

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_off00006485.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6485 5408 bytes
SHA-256: 80167e12e529de89c770d7a4e0c74841810f3ffd7bd0415526466499a4dd0ebd
font_01_sfnt_off000076f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76F9 9856 bytes
SHA-256: 08b3a7a748aa8c1e51c4244e579e994ee4a8a6e47d2d39223cc759202adcd083

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