Malicious PDF — malware analysis report

Static analysis result for SHA-256 6753c6a07d63397f…

MALICIOUS

PDF

42.0 KB Created: 2020-08-16 22:33:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: eb81d2295e0bd2f9882d52157ab04e79 SHA-1: a69ae42103b542533fc7f7ed13b8aaaa0abf17ea SHA-256: 6753c6a07d63397f8d07756fe3588b4906b8ac56e0b063815b317b02c3c6ea4a
202 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a malicious redirector URL (https://ttraff.cc/pify?keyword=call+ringtone++iphone). The document body and heuristics suggest a lure related to 'call ringtone iphone', likely intended to disguise the malicious nature of the links. The presence of a password-protected archive lure heuristic indicates the document may be part of a multi-stage attack designed to bypass gateway scanning.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=call+ringtone++iphone In PDF document text
    • http://siwugiv.bolognareview.com/uploads/1/3/2/8/132815176/8340758.pdfIn PDF document text
    • http://files.russianguideservice.com/uploads/1/3/1/4/131453484/c772cc4986af.pdfIn PDF document text
    • http://files.ptami.org/uploads/1/3/1/4/131437832/tatalujotepef.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0972/6870/files/101_benefits_of_black_seed_oil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6353/1933/files/giwuge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6451/5994/files/kojenipidatole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2290/1663/files/vujiruje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5192/6183/files/dotuxebovorubigekima.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/4944/7587/files/alteryx_designer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0763/1782/files/zobewaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5595/3558/files/additional_mathematics_pure_and_applied_jf_talbert_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0480/3746/files/zigixuvagajajesewedigabi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005de4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DE4 4716 bytes
SHA-256: cbd4840b4feca037e0bb51e182fe2176fd0d2c1b170b7cd0c23b8402adf7527c
font_01_sfnt_off00006dd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD9 9104 bytes
SHA-256: 312156173f8f1d24751e79091679b2a13b0a1044a708b76fbd31478871af9c1b
font_02_sfnt_off00008d06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D06 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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