Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba82bf13db1a5f20…

MALICIOUS

PDF

40.0 KB Created: 2020-08-21 03:55:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4acf5de61fbab29adc0090b1e36f4bbd SHA-1: f1b0c15d73c8acb717e6decc2b661b2b40b00c00 SHA-256: ba82bf13db1a5f207a0ecbc09c3e9e2580ef18c5b1b389db3539c128869e1a5d
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting PDF files, suggesting a link farm or SEO poisoning tactic. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is presented with a keyword related to calculating pay. This indicates a social engineering attempt to trick the user into clicking the link, likely to a phishing or malware distribution site. No scripts were extracted, and the document body is heavily obfuscated.

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=calculating+gross+pay+with+overtime+worksheet In PDF document text
    • http://files.colonialridgegolf.com/uploads/1/3/1/4/131438419/7861758.pdfIn PDF document text
    • http://files.ecologicing.com/uploads/1/3/1/6/131607374/5740231.pdfIn PDF document text
    • http://files.k9workinglinegsdvonbennett.com/uploads/1/3/1/4/131406885/xuzerelidoj.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/1/0428/9835/8432/files/71895612735.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9792/2461/files/bunufiwiritululavujaduk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3136/1686/files/naming_alkanes_and_alkenes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1685/5453/files/definicion_de_diabetes_mellitus_tipo_2_segun_la_oms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7717/9294/files/gabumoxubawibafafivako.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2793/0011/files/64160920339.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/pedodorisedarefexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9911/1070/files/32150403802.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1129/2827/files/lightroom_app_free_for_windows_7.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6509/8908/files/584261410.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 5

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_off00005da3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DA3 5572 bytes
SHA-256: 100dbdd7f1a465cdfff98d4dcdb0641a72cf61e3a9faca38600284429f4add56
font_01_sfnt_off0000707f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x707F 10192 bytes
SHA-256: 04e36067babffebb9da8ecb920812e5bb07d57183caa35d9fb37097bbb06cb9b

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