Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cc2a7a8f3302ca2…

MALICIOUS

PDF

36.0 KB Created: 2020-08-07 02:09:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 41a25913fb36aa31632ee26723ae0a84 SHA-1: 756aa7ead33d201fae7d993531831ace76277397 SHA-256: 4cc2a7a8f3302ca2e8ff2b923a6ee0d0cc0443c49acd2a268eb8fd9407e8608e
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=multivariable+calculus+formula+sheet+pdf'. This URL is presented within the document body, disguised as a calculus formula sheet, to entice users to click. The PDF also contains a link farm heuristic, indicating it's part of a larger SEO manipulation effort. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive document.

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=multivariable+calculus+formula+sheet+pdf In PDF document text
    • http://files.familyfunzone.com/uploads/1/3/2/6/132682639/bitedijok.pdfIn PDF document text
    • http://files.nicksforzaferrari.net/uploads/1/3/1/3/131379060/9066516.pdfIn PDF document text
    • http://files.menofcouragela.org/uploads/1/3/0/7/130739122/fd6e74b5.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/1/0427/9740/0223/files/17394264629.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2961/1171/files/rozuniwijifalonu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2733/1232/files/56666935309.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0491/2031/files/kinowiguzifuzivemobesusi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5777/3718/files/leraxokalajusupuko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4593/6534/files/molafikujim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2992/8863/files/fajar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4606/7621/files/33458061410.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8277/6725/files/vizinizefaxowaju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5841/2185/files/epsxe_full_screen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1411/1903/files/purulasep.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
🗂 Part of campaign: chicagoshares.org 5 samples

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_off00004d9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D9C 5600 bytes
SHA-256: b5969af5020e05b6822352a896e9fe0f7ab284c6af3ef297d69de66dad41996b
font_01_sfnt_off00006084.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6084 10144 bytes
SHA-256: 449765819adb4143696d4e5c53da1d735ec18a63d6e200f913ff7bf6f963df8b

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