Malicious PDF — malware analysis report

Static analysis result for SHA-256 288d3454e3e9c8c3…

MALICIOUS

PDF

41.1 KB Created: 2020-08-12 20:47:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 32eb459c84ae8d68aa38263b5203fc75 SHA-1: a47acdc0b511b53e4972f9c277cfcb96c463c5d5 SHA-256: 288d3454e3e9c8c32d5fe5fc801eec0032cf707f3f8f42ae8a288918b1c66f5a
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body text, though partially corrupted, suggests a lure related to a job application cover letter. The primary malicious IOC is the redirector URL, which likely serves as a gateway to further malicious content.

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/wb?keyword=covering%20letter%20for%20electrical%20engineering%20job%20application%20pdf In PDF document text
    • http://files.jbhcrafting.com/uploads/1/3/0/8/130874220/melozazijisajifor.pdfIn PDF document text
    • http://files.christchurchbabylon.org/uploads/1/3/0/7/130776069/novisoxixok.pdfIn PDF document text
    • http://tulefasix.woodrockanimalrescue.com/uploads/1/3/1/4/131437987/mewiwuzebugazat.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/1/0431/8940/3810/files/95488027201.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5788/2022/files/18892234671.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5009/9107/files/el_aire_que_respira_brittainy_c_cherry_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5181/7883/files/82991578325.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8121/1810/files/fogakewej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2341/6995/files/bob_ross_png.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7079/9510/files/50374984179.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4633/7693/files/ffxv_chocobo_race.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6159/9656/files/zanogaguzu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0426/4602/files/751229838.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/4708762632.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7462/6470/files/fidizamukijivufi.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 3

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_off00006405.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6405 5328 bytes
SHA-256: b4262620054245bba61d76f88f436d9138941e4124495fcfe0aa11060c7fafce
font_01_sfnt_off00007637.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7637 9660 bytes
SHA-256: dc4c86782ef380e42451fc07a6af2c25e67794ea09c059efdf23536ff178b5be

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