Malicious PDF — malware analysis report

Static analysis result for SHA-256 e43f0c53d53337e5…

MALICIOUS

PDF

43.8 KB Created: 2020-08-09 06:51:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5c5283f0c6675ade4929d9105ea44e71 SHA-1: 09e54155953133b3dae40295cc4fda8c4650820c SHA-256: e43f0c53d53337e58e2acf0fa2dd18a997068a003d24649037dbbcfb13a0dd1e
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one critical heuristic identifying a link to a known malicious redirector. The document body, though partially corrupted, contains text related to a sociology book and the wkhtmltopdf application, suggesting a lure. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm designed to obscure the ultimate destination, which is likely malicious.

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=napier+press+sociology+book+2+pdf In PDF document text
    • http://files.dawnhorstead.com/uploads/1/3/1/1/131163533/1b8e45893f359.pdfIn PDF document text
    • http://zibiti.athensprep.org/uploads/1/3/1/4/131406390/15b39db0682ab.pdfIn PDF document text
    • http://files.pestboyz.com/uploads/1/3/1/4/131454634/wigovepukovusuj_laxufisike_povakun_kakinuraxixiv.pdfIn PDF document text
    • http://files.thecentreofthecosmos.com/uploads/1/3/0/9/130969254/zuxotijuzesed_varalenero_ruvugozep.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7306/1532/files/wipuxufepetakux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3074/8072/files/jugomalepusedaxebisax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6658/0382/files/javakudoba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4926/8886/files/29440919149.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7035/7661/files/answer_sheet_toeic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4351/1702/files/mechanics_of_materials_8th_edition_gere.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3495/9256/files/32660718951.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3349/3658/files/77027514703.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9716/5728/files/the_accidental_prime_minister_book_in_marathi_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2956/9434/files/autism_spectrum_disorder_treatment.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 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005497.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5497 5332 bytes
SHA-256: b40619c51c8d25552ec98bd9b9251e2c95b572b62b7b7fdd0f647eb07b5b97a5
font_01_sfnt_off000066ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66CE 14208 bytes
SHA-256: ef6177fff832a02c90016c65bfb4e8c014b64672b8b0446d9efc0abc1a594859
font_02_sfnt_off000093b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93B8 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

Open this report in the interactive analyzer, or submit your own file for analysis.