Malicious PDF — malware analysis report

Static analysis result for SHA-256 4adba6550b50a958…

MALICIOUS

PDF

42.6 KB Created: 2020-08-04 22:50:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5fe14285c17c52dd1049c999f6cca034 SHA-1: 2c4c7d00dad2ef04c98b531a7fc744d6bd48b149 SHA-256: 4adba6550b50a9585832703f9f2e4a348ab850b868756f06409ae7b786b3a11c
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one specifically pointing to a known malicious redirector. This suggests the document is part of a link farm or SEO manipulation scheme designed to lead users to malicious content. The presence of multiple Shopify-hosted PDF links further supports the link farm hypothesis.

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.ru/pify?keyword=antasida+adalah+pdf In PDF document text
    • http://files.stormcallsiberians.com/uploads/1/3/0/8/130874411/sebabapo.pdfIn PDF document text
    • http://bulasir.strawberryblondebakery.com/uploads/1/3/1/8/131856584/892f03c.pdfIn PDF document text
    • http://files.jenwilliamsedu.com/uploads/1/3/1/1/131164431/ceea6438acbcd3b.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/1/0428/0595/2671/files/91474031353.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6106/7428/files/bootstrap_background_image.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1537/2949/files/the_challenge_fresh_meat_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9956/9832/files/wovewetuvuteliloserak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3490/1671/files/nba_basketball_teams_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9610/5375/files/33012658772.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7473/1685/files/genaxibenatewokaxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9460/5975/files/63133177090.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0078/1208/files/jozasajoludapax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/48797467757.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/61286624564.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4655/1208/files/muscle_pharm_workout.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7789/3270/files/bafereperixelib.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 5

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_off000069ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69EE 5020 bytes
SHA-256: 685bc7231972f90f2e55ef63957832682c3451b57b8d21460511aecb6cc6ee0e
font_01_sfnt_off00007b02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B02 10192 bytes
SHA-256: 818d776c8a7ede961c381828d60f8fdf842acbff0bdb2d704249ded6d4de6f44

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