Malicious PDF — malware analysis report

Static analysis result for SHA-256 74a0261c3c230c74…

MALICIOUS

PDF

44.1 KB Created: 2020-08-19 18:20:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 28c70bdf58f01956836cac3d3c1a03cc SHA-1: 7ea3f599f828755aded4c0113ec844834f991538 SHA-256: 74a0261c3c230c74e8a095ba1b14f200fea0ac0777186dacdbcc03f5bea3293b
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to known malicious infrastructure, specifically a redirector designed for SEO link farming and phishing. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a programming manual. This suggests an attempt to trick users into visiting a malicious site, likely for credential harvesting or further malware delivery.

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=atmega328+programming+manual In PDF document text
    • http://files.johnsonhousebullies.com/uploads/1/3/1/4/131438464/zuragitetikumitataku.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/1/0427/8052/4710/files/96734682513.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3116/7137/files/siboga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3972/6487/files/assam_history_in_assamese_language.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7013/6218/files/jimuxuxuruworoveli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8779/7160/files/76272807497.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5264/5017/files/24_hours_a_day_hazelden.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8976/5279/files/53691302110.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9165/6855/files/who_sings_somebody_s_watching_me.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/5848/3620/files/caderno_de_anotaes_congresso_2018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6668/7639/files/tifowuvevidar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6393/5129/files/celebrity_endorsement_case_study.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1828/8277/files/37545159782.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8070/3382/files/xilowuxaxevul.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_off000069b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69B6 5440 bytes
SHA-256: 15f7a308107dd3b4148ccd861b2c43b39b04907f10996bc68c439f1baead421d
font_01_sfnt_off00007c1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C1E 12068 bytes
SHA-256: 2e34c4052caf9aa83ac11ebfc2ab94facb10b4ccf33bbe9ad510b5d442eb3d33

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