Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a1df7577d979fdb…

MALICIOUS

PDF

39.0 KB Created: 2020-08-14 00:59:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a8dfa5edd413dfaedd711314a964bce6 SHA-1: 1b01bd17691cc9ac9daa7bff57dcc191c8aacc78 SHA-256: 2a1df7577d979fdb6d8d0b4e85e0b07cfe4c46bbbeca3ee08a92d0a507f8a0a9
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=whirlpool+fxvm6+oven+user+manual'. This indicates a social engineering attempt to trick users into visiting a malicious site, likely for phishing or malware distribution. The document body, though heavily obfuscated, contains references to the redirector URL and other embedded URLs, reinforcing the malicious intent. The presence of a link farm heuristic further suggests an attempt to manipulate search engine results or distribute content broadly.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=whirlpool+fxvm6+oven+user+manual
    • http://files.wanderlustironworks.com/uploads/1/3/1/6/131606396/velerefikudo.pdf
    • http://kawido.tokenguitaramps.com/uploads/1/3/1/4/131437502/vidufanajeker.pdf
    • http://files.howlinghillsranch.com/uploads/1/3/0/7/130776487/pilokerekojem.pdf
    • https://cdn.shopify.com/s/files/1/0431/0184/7708/files/surgical_recall_6th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0437/1313/4757/files/kali_linux_wifi_hack_commands_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/0126/6851/files/kadambari_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/6249/3345/files/clinical_trials_overview.pdf
    • https://cdn.shopify.com/s/files/1/0434/0298/5622/files/great_i_am_chords_and_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0435/5378/3957/files/80929950991.pdf
    • https://cdn.shopify.com/s/files/1/0440/4844/9686/files/anemia_defisiensi_asam_folat.pdf
    • https://cdn.shopify.com/s/files/1/0437/1437/9930/files/navy_eval_writer.pdf
    • https://cdn.shopify.com/s/files/1/0430/6714/6397/files/giretafozoxiwa.pdf
    • https://cdn.shopify.com/s/files/1/0428/8200/7199/files/que_es_crowdsourcing.pdf
    • https://cdn.shopify.com/s/files/1/0435/3294/3519/files/jekaxorufonukotalasem.pdf
    • https://cdn.shopify.com/s/files/1/0454/9804/0472/files/can_you_feel_the_love_tonight_ukulele.pdf
    • https://cdn.shopify.com/s/files/1/0431/1334/9273/files/15302507919.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004d57.bin
d73b4bf92964aaf4788029f13d99e0fbe54a47f365245bd4b448f0408eddfa74
pdf-font-stream PDF embedded font (sfnt) at offset 0x4D57 5236 bytes
font_01_sfnt_off00005eff.bin
49bfb56de7772dab61e6b940fb466808fe26860d18de5ce0cd7f0055b4d917b5
pdf-font-stream PDF embedded font (sfnt) at offset 0x5EFF 9968 bytes
font_02_sfnt_off0000812f.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0x812F 4324 bytes