Malicious PDF — malware analysis report

Static analysis result for SHA-256 552bf29c730471db…

MALICIOUS

PDF

42.7 KB Created: 2020-08-18 21:33:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 77fd47bd5178618315b9f70271849816 SHA-1: 5f6e71efedc846a28662fcf9a51e2e561b1ab190 SHA-256: 552bf29c730471dbc995fdcbc29d290f39fe2a831bf0d13ee3962d5111e4b2fc
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that triggers the malicious redirector. This suggests a phishing or scam attempt designed to lead users to malicious infrastructure.

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=los+organelos+celulares+pdf In PDF document text
    • http://xijuf.freedomunchained.com/uploads/1/3/1/0/131070401/resufotemagi-kakeru-muwuxemudipikek.pdfIn PDF document text
    • http://files.nativeroots-design.com/uploads/1/3/1/4/131453645/4c2a001.pdfIn PDF document text
    • http://files.hidefdjs.com/uploads/1/3/0/8/130874480/gizadi.pdfIn PDF document text
    • http://files.poolservicefresnoca.net/uploads/1/3/1/1/131163492/4aad7f.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/1/0430/6635/9962/files/54853948225.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9980/8149/files/fiwugawise.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9019/8180/files/introduction_to_trigonometry_class_10_ncert_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0930/9848/files/72265953092.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0883/5229/files/pewebupusugumufisajar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8333/3799/files/the_hungry_caterpillar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7320/0537/files/free_secured_promissory_note_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1627/2547/files/vevikijizalumejolixoso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2925/8649/files/15701486641.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7178/9469/files/institutional_ownership_capital_structure_and_firm_performance.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3369/8209/files/21026594321.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5693/8658/files/zizaxigiwoxow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/18228196141.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7197/9172/files/sowijapivez.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_off0000668b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x668B 5264 bytes
SHA-256: f5a40703984f00da3573b820b2df37b4440468e707c6d1bc032488f1994eb746
font_01_sfnt_off00007880.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7880 11052 bytes
SHA-256: e1ed7c5e55768303955687b795987155729de6366a16fb5c38bcc607c17aa24d

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