Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf9c270064561f21…

MALICIOUS

PDF

55.7 KB Created: 2020-07-13 19:24:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 80604eda0bb7521b6e37488de6babf9f SHA-1: 332c1770a02fef8b45b74c144b8e79a69ad5a30e SHA-256: bf9c270064561f212235ab5d7b220cb35f36bdd4e246e857be9358c702be3b8e
192 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a malicious redirector link pointing to traff.com, which is a known malicious domain. It also hosts a large number of external PDF links, likely for SEO manipulation to increase visibility. The document body, though heavily obfuscated, suggests a lure related to an 'Udacity social media advertising guide pdf'. The presence of a visual download button further supports a social engineering attack. No scripts were extracted, limiting the analysis of specific execution chains.

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=udacity+social+media+advertising+guide+pdf In PDF document text
    • http://files.jjsdka.org/uploads/1/3/0/9/130969819/98a098cf.pdfIn PDF document text
    • http://files.sting-likea-bee.com/uploads/1/3/0/8/130873838/bazuvurowadaretukab.pdfIn PDF document text
    • http://files.guildenmordencongregationalchurch.com/uploads/1/3/1/1/131163953/sazarejadok.pdfIn PDF document text
    • http://files.kw.ehabacademy.com/uploads/1/3/1/4/131437666/3871002.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://gijubuwat.files.wordpress.com/2020/07/32041655774.pdfIn PDF document text
    • https://polisixojo511032843.files.wordpress.com/2020/07/85773453325.pdfIn PDF document text
    • https://fikuravere.files.wordpress.com/2020/06/gukotunaz.pdfIn PDF document text
    • https://fizedetaz.files.wordpress.com/2020/06/6903160469.pdfIn PDF document text
    • https://jepanabukam.files.wordpress.com/2020/06/ritigofovavufimenasukoxo.pdfIn PDF document text
    • https://serifutaje.files.wordpress.com/2020/07/tiparokamufep.pdfIn PDF document text
    • https://tinuzedujat.files.wordpress.com/2020/06/9878560112.pdfIn PDF document text
    • https://takirosikut.files.wordpress.com/2020/07/44862986762.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/41448402009.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1633/1172/files/75662871785.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tevedizulav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xedatojif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/50022645306.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/43778875991.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009acb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9ACB 5508 bytes
SHA-256: cf41aedcafd9662a3c063255a74bdd09e9a73d8324f5fb6b80c45f7fb9fa202f
font_01_sfnt_off0000ad82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD82 10484 bytes
SHA-256: e1664f192ad6ae10b00bcff33859ecd4056d7ed3beb2146c1db2fce9b97883cc