Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc353ce3b8d0e2c9…

MALICIOUS

PDF

42.9 KB Created: 2020-08-27 19:39:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 02a8dd7e5a0394b8178d49765fde9862 SHA-1: 6953501db17568f14b717053e5b7e1f8874b528a SHA-256: bc353ce3b8d0e2c91c796d65798be6eaa342cc1746a6d94934f230650767062f
194 Risk Score

Malware Insights

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

The PDF file was flagged as malicious due to containing a large number of external links, many of which point to PDF files hosted on Shopify. One of the primary links redirects to a known malicious redirector infrastructure. The document body contains garbled text but includes the same redirector URL, suggesting an attempt to disguise the malicious intent.

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=historietas+cortas+para+imprimir+y+c In PDF document text
    • http://gexifapol.leetech-led.com/uploads/1/3/1/4/131482995/1147419.pdfIn PDF document text
    • http://files.winscombedental.com/uploads/1/3/1/8/131856992/rilaveji.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/1/0436/8809/9993/files/vegan_bodybuilding_nutrition_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4539/4331/files/lactobacillus_buchneri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9790/6589/files/boveku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9160/8227/files/41550872346.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2572/6614/files/xajeme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/2708/3943/files/69271292416.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0880/9384/files/92085082916.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2368/6056/files/jidasepuna.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/4834/1399/files/para_que_sirve_la_gasometria_arterial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0568/8483/files/vitesobikud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5698/0377/files/13836855586.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2913/5514/files/4243025920.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 1

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_off00006771.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6771 5108 bytes
SHA-256: a61ba7a134c4bbb7a1278163b73dd3ced3114b3941830ae51c5b22cb8725d219
font_01_sfnt_off000078bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78BC 11200 bytes
SHA-256: 0295823d94fdb4cd48865f02de8a42c2ad3a1206e3ff554dd2bc6661a8520910

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