Malicious PDF — malware analysis report

Static analysis result for SHA-256 386af8ded66fbb37…

MALICIOUS

PDF

49.7 KB Created: 2020-08-05 10:55:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7759e56ac9a33852e13359eadd414009 SHA-1: de3452bfc23d69a5b8b9fda3217cabbd6ccaf3bd SHA-256: 386af8ded66fbb37daf828a482a0349567367679d6b3d7ee06e75b15cc0da7f8
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which points to 'https://ttraff.cc/pify?keyword=receptores+nicotinicos+de+acetilcolina+pdf'. This URL is likely used to redirect the user to a malicious site. The document also contains a large number of external PDF links, many hosted on Shopify, which is indicative of a link farm used for SEO poisoning or to obscure the final malicious destination. The document body contains garbled text but also includes the suspicious URL.

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.cc/pify?keyword=receptores+nicotinicos+de+acetilcolina+pdf In PDF document text
    • http://ruxim.readingswithkaren.ca/uploads/1/3/1/3/131380729/vegurezafa_sepebok.pdfIn PDF document text
    • http://files.northjeffersonrepublicanclub.com/uploads/1/3/0/9/130969577/9e8006fa918b6d5.pdfIn PDF document text
    • http://files.andbardc.com/uploads/1/3/0/8/130873769/8113143.pdfIn PDF document text
    • http://files.coolblue-bb.com/uploads/1/3/0/7/130775515/mumofomom-falanoxij-pijaforexemuvib.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/1/0430/6285/3794/files/badatixewetinukew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/walezilufotalenuzodumis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0230/6468/files/abedular_de_canencia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/87967576867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1230/9670/files/belududeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3191/2857/files/68593367526.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8648/7455/files/the_binding_of_isaac_rebirth_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/70278744099.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5240/8742/files/givupovekilivesuvoxom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wizivudid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5491/3943/files/90926182299.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6249/1286/files/oregon_dmv_accident_report_fillable.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
🗂 Part of campaign: aquinasmaths.com 3 samples

Related samples 4

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_off000081a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81A8 5156 bytes
SHA-256: 632c989d8a3f21cc684b4c31af8aa0c8369258c20bde12a9477311f4bdadf9d8
font_01_sfnt_off00009348.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9348 11040 bytes
SHA-256: 37fc706632968583b209a709c2c243db6a18fc0310eeebee3ccf736766589006

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