Malicious PDF — malware analysis report

Static analysis result for SHA-256 c52cce3f33392d76…

MALICIOUS

PDF

40.0 KB Created: 2020-08-09 02:12:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 896d72a72572dfee4e4da5b9faaef1f5 SHA-1: 45335ebf82a1759a76d894354ff90c5c8a0985ab SHA-256: c52cce3f33392d7620f3f169f8a7ce7a430c5bc0128572e1d0aee2ff1b89c026
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=sociology+as+a+social+science+pdf'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external PDF links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious redirector URL, suggesting the primary intent is to lure the user to this malicious site under the guise of providing a sociology PDF.

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=sociology+as+a+social+science+pdf In PDF document text
    • http://files.innofthearts.com/uploads/1/3/1/4/131483255/1ea82ca2c923.pdfIn PDF document text
    • http://files.australasianhumanbiology.com/uploads/1/3/1/4/131406352/pibawefumivujugediz.pdfIn PDF document text
    • http://files.bsapack1hk.org/uploads/1/3/1/4/131437513/jizubonuji.pdfIn PDF document text
    • http://xafanuv.rochesterbeekeepers.com/uploads/1/3/1/4/131407164/sojoduli.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/1/0431/8344/0036/files/aldous_huxley.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1943/6195/files/vita_di_galileo_brecht_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0124/9955/files/american_accent_training_pronunciation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7389/6602/files/16567713016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5702/9019/files/fagigiroja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2034/4731/files/ganovuruni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5649/6794/files/kexoxefuvilelofexaneb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0459/1254/files/58520548031.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3482/9223/files/derepujemepagad.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 6

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_off00005f17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F17 5432 bytes
SHA-256: 30371d626204f5c69c70acf1ea70382306de5cb4084df0c99424808ec99a4f55
font_01_sfnt_off000071b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71B4 9800 bytes
SHA-256: 88d084ff9ec99c1f76c6cd721406020bc310314977419b24b0ae152a84376504

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