Malicious PDF — malware analysis report

Static analysis result for SHA-256 9084490fa1f3209c…

MALICIOUS

PDF

35.2 KB Created: 2020-08-26 01:58:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 492f1d930a5ddb60812ac32dd3c09bd2 SHA-1: a3a38bf581efe4ae55899dbb99214ff1e73a0756 SHA-256: 9084490fa1f3209c66be3d25345fcd90d1b071c1fe4534a752744e7ed7411507
234 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a PDF link farm. One of these links, 'https://ttraff.com/pify?keyword=who+makes+the+best+mattress', is flagged as a malicious redirector. The document body, though partially corrupted, contains text related to mattress reviews, suggesting a lure to disguise the malicious intent. The file's purpose appears to be directing users to malicious infrastructure through a deceptive link.

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=who+makes+the+best+mattress In PDF document text
    • http://files.brusi.it/uploads/1/3/1/3/131398091/f951e33b.pdfIn PDF document text
    • http://files.rgilles4fse100.org/uploads/1/3/0/8/130874284/425293.pdfIn PDF document text
    • http://files.geowingmapping.com/uploads/1/3/1/6/131637876/vazawebufejev.pdfIn PDF document text
    • http://files.daydreamphotographybykatherineweeks.com/uploads/1/3/0/8/130814682/1202566.pdfIn PDF document text
    • http://files.windersonscreations.com/uploads/1/3/1/4/131406082/5184639.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/1/0428/5346/6271/files/97801307476.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8799/4792/files/rowobutogit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8058/1274/files/61250185434.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8531/4715/files/what_is_composition_in_java.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2890/5127/files/mimugumalesa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/6796/5339/files/60914865886.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2476/1507/files/janepaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8374/1849/files/76047875637.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6409/8970/files/pigunidozudirenimaxiwuru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5534/0954/files/xofawotu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9851/4343/files/jenolunimowosipakotut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4606/7605/files/jebamuxitapedoxoto.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_off00004b8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B8F 5108 bytes
SHA-256: 02ebd87c714d77b08a8bc1c910243c447702e594770098b651596fe51f64dc47
font_01_sfnt_off00005cd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CD2 10388 bytes
SHA-256: 2f13a7faaa189348e61099a821f4cfeae19d5e67b6daae0c5bd85cff35d3232d