Malicious PDF — malware analysis report

Static analysis result for SHA-256 18256549dfb8650f…

MALICIOUS

PDF

53.2 KB Created: 2020-08-19 23:02:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 00f0b6859e72460f97bc458233fe390d SHA-1: 8223542d9c068d29d4778a78060cc43e1f00c45a SHA-256: 18256549dfb8650f9ea462f2ea7e966b4f1a7bf58e55843ea9ede45c2bc0a367
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a redirector disguised as a government form, indicating a phishing or malware distribution attempt. The ML classifier strongly flagged this PDF as malicious, and heuristics identified it as a redirector link and part of a link farm. No scripts were extracted, but the embedded URLs suggest a lure to external 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/pify?keyword=va+complaint+of+employment+discrimination+form In PDF document text
    • http://zonimo.ptsocietytamu.com/uploads/1/3/2/6/132682052/vasesufodajodolo.pdfIn PDF document text
    • http://files.handsupoutofpoverty.com/uploads/1/3/1/4/131452929/kopuxi.pdfIn PDF document text
    • http://files.doramalech.net/uploads/1/3/0/8/130873949/a3118019.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/1/0431/5735/6710/files/bajaj_allianz_general_insurance_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/2363/4330/files/speaking_english_like_an_american.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1748/7011/files/17221802947.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6402/4470/files/45571037624.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2496/6044/files/2917845753.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9880/7202/files/sevigilitabatogawifupasud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6923/3557/files/57200279449.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6401/6539/files/45288908284.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6332/7385/files/53015871926.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3564/0487/files/71640503967.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2060/6885/files/convert_f_to_c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3282/8314/files/hitman_contracts_walkthrought.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 2

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_off0000920f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x920F 5368 bytes
SHA-256: f8c98ddf0cea081c97a65dcf802efa55633183c5eef486ab5f49b5b5d5f25a49
font_01_sfnt_off0000a445.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA445 10472 bytes
SHA-256: ed6a2af5acd8e6cd5d806fc472504a5e34e037871f42ada6e1150ab2b3604d8d

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