Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d579b3687a42b2f…

MALICIOUS

PDF

41.0 KB Created: 2020-07-29 07:58:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8941c1d0c8512a155bafcd1efefd5603 SHA-1: cc1a9268a658941c8aa4f7e05e593281bd6ffef4 SHA-256: 5d579b3687a42b2f6daa57206951079f713e3a4970370a2e9b28bdcb3ed6a936
194 Risk Score

Malware Insights

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

The PDF document contains a lure related to 'Farewell to Manzanar comprehension questions and answers' and embeds numerous links. Several heuristics indicate that these links lead to a redirector and a link farm, with one URL identified as a known malicious redirector. The ML classifier also strongly flagged this PDF as malicious, suggesting it's part of a phishing or scam campaign.

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=farewell+to+manzanar+comprehension+questions+and+answers In PDF document text
    • http://files.mariannemission.com/uploads/1/3/0/7/130775672/9abe14f36aedcba.pdfIn PDF document text
    • http://files.teddynasrmusic.com/uploads/1/3/2/7/132740270/fenalaxadijubaniki.pdfIn PDF document text
    • http://files.overzealous.ca/uploads/1/3/1/0/131070894/8454969.pdfIn PDF document text
    • http://files.sueroupp.com/uploads/1/3/1/0/131070625/datazoxinetosad.pdfIn PDF document text
    • http://files.ours-winnipeg.com/uploads/1/3/0/7/130776769/lemubuzexozurira.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/75609531209.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/21533622499.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6567/8755/files/lizutitekexoxiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2843/8427/files/89262496022.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7916/2263/files/rinepexexukatuke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1140/0102/files/15267428696.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3934/2247/files/31173743748.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7652/7014/files/76863657192.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3387/8940/files/tajibuzogezozumezafa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1384/0793/files/litununiwugubinefibopemi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9511/2347/files/82885203540.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7665/7057/files/diweledomudasetewunewu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1096/5147/files/renorasawo.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_off0000626a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x626A 5416 bytes
SHA-256: aee00e3e10a5b658ab56320fe3861fa888d056a4f82a04ed4e0cb2e8678f227f
font_01_sfnt_off000074b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74B8 9948 bytes
SHA-256: 1aeea66b1afd1fb574a17132db3e2e16790dec3e88801c82e0b1926994a6935a

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