Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa2c449945ad1998…

MALICIOUS

PDF

42.6 KB Created: 2020-08-18 17:45:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 99b59ff4853f3a49837ed562aebaa574 SHA-1: 9bfd3eb50ea6d6591974f21dce001c544a127ec0 SHA-256: aa2c449945ad1998d2d15e95c96ae1f715aabd2452ed3744c5702ebbb9b5a849
194 Risk Score

Malware Insights

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

The PDF contains a deceptive lure related to a LinkedIn profile picture, directing the user to a malicious redirector URL. The presence of a large number of external PDF links, many hosted on Shopify, suggests an attempt to obscure the true malicious destination or to create a link farm. The ML classifier strongly indicated maliciousness, supporting the heuristic findings.

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=your+linkedin+profile+picture In PDF document text
    • http://files.scarfitup.org/uploads/1/3/0/7/130739802/8395a5.pdfIn PDF document text
    • http://files.taniajanenaturally.com/uploads/1/3/1/3/131378776/zogodigenared-robonezuwa.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/1/0433/0687/7080/files/47171602999.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2638/9912/files/nijogebomur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2323/5232/files/30634725789.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2873/2314/files/5071393568.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4536/3616/files/56134019954.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5525/9560/files/feninu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4380/5591/files/13802312648.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0021/6232/files/types_of_balance_of_power.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 4

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_off00006a96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A96 4784 bytes
SHA-256: 1cf66ad4134d911e04e23464da0b4adc05cd26e1af12780177b831fc928cd93a
font_01_sfnt_off00007ae9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AE9 10168 bytes
SHA-256: 0c9c3228d7df69a4bf2e2a76fe78561d17b9cc4a12264b62251695b4c81c2cf1

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