Malicious PDF — malware analysis report

Static analysis result for SHA-256 305c96c22497ed95…

MALICIOUS

PDF

49.0 KB Created: 2020-07-29 23:48:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8b708fb46abc8b4dabe42f4e0bee3f9c SHA-1: 5884d3ac3a101222252c1575cfe101192f3439ff SHA-256: 305c96c22497ed95a73a148066b0c092e69cb0fceee7414a8bf4376b192ac00d
234 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one identified as a known malicious redirector. The document body is heavily obfuscated, but the presence of a link farm and a malicious redirector suggests an attempt to drive traffic to malicious sites. No scripts were extracted, limiting the analysis of specific execution behaviors.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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=al+anon+slogans+pdf In PDF document text
    • http://files.johndowgiallo.com/uploads/1/3/0/7/130740048/bb9c10f93b0.pdfIn PDF document text
    • http://files.westfieldhighschoolgirlsicehockey.com/uploads/1/3/1/4/131483445/wosokizinewa.pdfIn PDF document text
    • http://files.inalargeroomretreat.com/uploads/1/3/0/9/130969768/18c06b2.pdfIn PDF document text
    • http://files.instrumentalallergysolutions.com/uploads/1/3/0/8/130813887/femolomapozopib.pdfIn PDF document text
    • http://files.liamprinter.com/uploads/1/3/0/9/130969428/xemiluro-jujusipaxekuvej.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/1/0430/1645/4305/files/24771848490.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/30553092986.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8603/6635/files/38992990788.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3123/2674/files/kivobem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9262/3001/files/22297340814.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4945/9605/files/3571379786.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6073/1799/files/36964850576.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4763/2548/files/13418379027.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1242/1789/files/19705109340.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8184/2341/files/kasosoxipibinele.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2021/2645/files/2961943718.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3401/0015/files/40922058102.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1629/8393/files/fopufej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4608/2472/files/zofedub.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008268.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8268 4644 bytes
SHA-256: 296a1c9e1284c48e699bc8b3817828aa22b348230eed4d5c3b53726f071dd7cd
font_01_sfnt_off00009237.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9237 10260 bytes
SHA-256: a401e212f3ea15e5c3fd44a9e995a47cb10270e286ed34f9f9d664c14051fc75