Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b4f642340dfeb0e…

MALICIOUS

PDF

44.3 KB Created: 2020-08-03 13:06:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90439e4e099c5e1ae2798bf359e74aa1 SHA-1: bf37731282a08fa064f89415ac18dc3bdd8fb57b SHA-256: 7b4f642340dfeb0edb17cc746ed91886f305a3afa5a8db4574f41f5f5008f371
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of external links, many of which point to a redirector infrastructure known for malicious activity. The primary malicious link identified is https://ttraff.cc/pify?keyword=periodic+table+crossword+puzzle+pdf, which likely serves as a gateway to further malicious content or phishing pages. The document's structure and content suggest it is designed to exploit users' curiosity or trust by presenting seemingly innocuous links that ultimately lead to harmful destinations.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=periodic+table+crossword+puzzle+pdf
    • http://files.emaankhawaja.com/uploads/1/3/1/4/131453405/vevoredotepi-rijejo-riruxodupid-sokumifa.pdf
    • http://files.greenlightinspection.com/uploads/1/3/0/7/130739444/xesosoto.pdf
    • http://files.christianmendozamusic.com/uploads/1/3/2/7/132741322/3492435.pdf
    • http://files.colleeniversen.com/uploads/1/3/0/7/130739678/paxiwi-marewigiwulami-lozerasogutuwu.pdf
    • http://files.berksauto.com/uploads/1/3/1/6/131637362/pazow_zufovoseta.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/7581/9927/files/timex_alarm_clock_radio_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2125/files/67328193938.pdf
    • https://cdn.shopify.com/s/files/1/0432/1778/0896/files/48012329979.pdf
    • https://cdn.shopify.com/s/files/1/0432/6083/8050/files/satidufinutijagela.pdf
    • https://cdn.shopify.com/s/files/1/0432/8872/3616/files/rifoxupeveda.pdf
    • https://cdn.shopify.com/s/files/1/0430/6026/5117/files/73630289041.pdf
    • https://cdn.shopify.com/s/files/1/0432/8695/4139/files/vetimusisilitosiwiwe.pdf
    • https://cdn.shopify.com/s/files/1/0433/0684/4315/files/tedop.pdf
    • https://cdn.shopify.com/s/files/1/0428/5467/8687/files/77152751373.pdf
    • https://cdn.shopify.com/s/files/1/0432/1761/7057/files/46713642208.pdf
    • https://cdn.shopify.com/s/files/1/0439/4260/9051/files/30375699446.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/35679391278.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e60.bin
8f6755cd8bf0360cca34ac9153a832437173b241daf1528a2f35d2611b0ef8d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E60 5432 bytes
font_01_sfnt_off000080fe.bin
7b0ce1aa323ed725fa0ce16c413fb62c98ad624a0cea733c3718de36de392a46		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80FE 10240 bytes

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