Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f5a5cfb32fdac19…

MALICIOUS

PDF

61.4 KB Created: 2020-08-07 01:00:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 334451a610f8b0158810a0902399db1f SHA-1: ee7bdceb199370d4d38c7696c98779a525d49e20 SHA-256: 1f5a5cfb32fdac19cda2bcd184a6a32f8b48512d9104d9c3fdf4316f5d4810d0
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'acceptance sampling plans' and the URL 'https://ttraff.com/pify?keyword=acceptance+sampling+plans+pdf', suggesting a lure to a malicious site. The presence of a large number of external PDF links also indicates a link farm or redirection strategy.

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.com/pify?keyword=acceptance+sampling+plans+pdf In PDF document text
    • http://files.baxplumbing.co.uk/uploads/1/3/1/4/131407299/xepiporo.pdfIn PDF document text
    • http://files.millbrookrotarydirectory.com/uploads/1/3/0/7/130775846/d99ea.pdfIn PDF document text
    • http://files.hchicb.com/uploads/1/3/2/7/132740375/7559337.pdfIn PDF document text
    • http://files.dewittcountysc.com/uploads/1/3/0/7/130739489/293041.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/1/0430/4912/3993/files/angular_2_github.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/33226622494.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7338/8190/files/nasekobozonoxijop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8371/0108/files/69760582781.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8147/2929/files/wafuwezijanesumamupax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7079/0558/files/54231643244.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0668/7389/files/brutal_doom_hell_on_earth.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1791/8870/files/95341651436.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3458/0891/files/7488062599.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7730/4484/files/24387572630.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4324/9563/files/memovasifob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/koxumugude.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1165/4307/files/99083415666.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_off0000abfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xABFA 5368 bytes
SHA-256: c489b112e34337ba7e42f289106957b97dacc03e55afd78b2b45ddd9d8a424fe
font_01_sfnt_off0000be33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE33 13340 bytes
SHA-256: 469f5619beeb92508287f786615cd197c3d97106a20ac1ba75bbde50adb08ffa

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