Malicious PDF — malware analysis report

Static analysis result for SHA-256 16999abc354e69d0…

MALICIOUS

PDF

40.8 KB Created: 2020-08-03 19:08:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 07dbf8f3442ea5919f01c03e12843707 SHA-1: d5ec6ec6a1b72c3a0122d0ece0d09c609d14cd90 SHA-256: 16999abc354e69d00035358250f2b395b00ab49aff1416b580f55edae29db1a8
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector URL known to host malicious content. The document body, though heavily obfuscated, contains the same redirector URL, suggesting a phishing or scam attempt to lure users to malicious sites. The ML classifier also strongly indicated maliciousness.

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.ru/pify?keyword=rituel+pour+attirer+l+argent+avec+le+sel+pdf In PDF document text
    • http://detobema.theirelandwalkingguide.com/uploads/1/3/0/8/130873951/tereke_desusenixegumep_delalomitupajir.pdfIn PDF document text
    • http://files.stjamestaos.com/uploads/1/3/1/4/131453276/9179154.pdfIn PDF document text
    • http://files.eboostconsult.com/uploads/1/3/1/6/131637896/c0bc895.pdfIn PDF document text
    • http://files.frankhagancontracting.com/uploads/1/3/2/6/132681404/zatamutofineve.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/1/0431/0610/7552/files/50460511291.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0118/4417/files/57342962089.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0321/3984/files/39255203642.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6308/3170/files/31996581325.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7973/8278/files/bubetovozokoxagoxiraduzul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6350/0197/files/exploring_geology_3rd_edition_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2391/7478/files/sewalux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7084/7131/files/pesunomitute.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9869/4042/files/rafamobifate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/15796621189.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kevimofurerofujasopam.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 8

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_off00005e40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E40 5392 bytes
SHA-256: b26953163ccb2ace4d077acfcc403395a8c25c348e591b18a0969b554a648380
font_01_sfnt_off000070b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70B1 11200 bytes
SHA-256: ed045cdb27fc9a4e9142b5650fde8a6ef413da04b0a9949264876ebc55868416

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