Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2928f388e4dd9f5…

MALICIOUS

PDF

43.5 KB Created: 2020-08-11 14:41:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0a6334bf3479db9a06f39499fc6e7c1e SHA-1: 2cd53ec8ffa7dd630264f2f68e6e8d525b204a8f SHA-256: a2928f388e4dd9f5f61212683aef9122a868570fa846a9db053bb630187efd8e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm and a critical redirector link pointing to malicious infrastructure. The document body, though heavily obfuscated, contains text related to 'Algebra 2 homework answers pdf' and a URL that is also present in the heuristics. This suggests a lure to trick users into clicking the malicious link, likely leading to further malware download or a phishing page.

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=algebra+2+homework+answers+pdf In PDF document text
    • http://bexude.mikemooers.com/uploads/1/3/0/7/130740434/7285575.pdfIn PDF document text
    • http://papitojip.kayleighfichten.com/uploads/1/3/1/3/131384281/pokupepume.pdfIn PDF document text
    • http://files.miguelemoovie.com/uploads/1/3/2/7/132712057/3fa7605.pdfIn PDF document text
    • http://bakovo.beyondessentialoil.com/uploads/1/3/0/7/130739415/vewus-dexomudunek.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/1/0435/5060/5461/files/nozizomijarunifo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8291/4723/files/asepsie_antisepsie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7526/2869/files/35964390249.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9385/9231/files/xoruwupawepivuta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4392/9757/files/s._y._b._com_books_pune_university.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1007/2481/files/sasevazuziximutak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6501/5460/files/judutoxubilopamedo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2177/0657/files/woozworld_hack_no_survey.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1241/5911/files/agilent_34401a_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4155/3575/files/genetics_laboratory_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8070/4405/files/ganepuba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3913/7697/files/89575547103.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 4

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_off00006b00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B00 5872 bytes
SHA-256: a9dccc2306fd8b7471d5cc92ed1e118e81b90930a5b3353d1ff832e98c82d3a6
font_01_sfnt_off00007ee1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EE1 10080 bytes
SHA-256: ef71d23a3b9dc5a35a6e3bd1ef964e29697b10b1f3836aea6308f72e624bb152

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