Malicious PDF — malware analysis report

Static analysis result for SHA-256 c87de232fa778b83…

MALICIOUS

PDF

40.9 KB Created: 2020-08-19 15:11:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d049ad529d7705390ad5c13775b50a22 SHA-1: 4d64900173f1508b163ca63d0f15a940827d6c12 SHA-256: c87de232fa778b83c095f27be2fd3e73eb5dfe4774f4100cf4821bbebd466920
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF contains a lure to install a browser extension or update, a common social engineering tactic for malware delivery. It also links to a redirector infrastructure, specifically 'ttraff.com', which is flagged as malicious. The document body contains obfuscated text and a URL that reinforces the 'dumb update android app' theme, suggesting a phishing or malware distribution attempt.

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.
  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=dumb+update+android+app In PDF document text
    • http://files.autochekcenters.com/uploads/1/3/0/7/130775286/6435763.pdfIn PDF document text
    • http://firizeban.mistymeadowsfarm.net/uploads/1/3/1/6/131636665/9888304.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/1/0437/9885/5840/files/architect_s_handbook_of_professional_practice_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2164/6498/files/78971745528.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4072/6427/files/63746571854.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8488/1824/files/rivugonomebepasut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/1151/0170/files/d_d_4th_edition_character_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/8277/9541/files/breath_of_the_wild_water_guides_shrine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34515707504.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0028/2779/files/22743899772.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0453/8423/7224/files/calendrio_2017_com_feriados.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1080/8213/files/49266563880.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7335/5424/files/lamimegamusufuwedusowivak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6656/4520/files/5723472851.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_off00006210.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6210 5036 bytes
SHA-256: d787e077bc55454dfac4ca57c999afaa3f76832ad4d05c10e438366f6017d8f9
font_01_sfnt_off00007311.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7311 10488 bytes
SHA-256: 811160eb37ae74a701f66f46d58b1708dc0a72837cf7407f3d39c96d58a5ebae

Open this report in the interactive analyzer, or submit your own file for analysis.