Malicious PDF — malware analysis report

Static analysis result for SHA-256 066bc8757a897bb9…

MALICIOUS

PDF

53.8 KB Created: 2020-08-05 04:10:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1ba82d6e43491c172fbe229ef45f41e0 SHA-1: deeeedf450f357bc3cb74c8c2d8ef3c66ec68971 SHA-256: 066bc8757a897bb9e4ca5f8da4bbb123e4ffc4bb35b12daf940bf446248ca49d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with the primary one leading to a known malicious redirector. The document body, though heavily obfuscated, contains text suggesting it is a PDF related to 'attachment theory adults pdf', likely a lure. The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating a phishing or scam attempt.

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=attachment+theory+adults+pdf
    • http://files.duquesnepharmacyelectives.com/uploads/1/3/1/3/131380995/684d06f47c1d.pdf
    • http://files.elleextensioncils.com/uploads/1/3/1/4/131453610/3728396.pdf
    • http://bofotomik.greenorganicfd.com/uploads/1/3/1/4/131482995/veveveb-gezifokiz.pdf
    • http://files.chrisrookwoodpottery.ca/uploads/1/3/0/7/130740212/tajoga.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/1234/1412/files/7283513762.pdf
    • https://cdn.shopify.com/s/files/1/0427/6014/3014/files/jakamobuwevedujepizuluga.pdf
    • https://cdn.shopify.com/s/files/1/0428/2767/7852/files/90342061022.pdf
    • https://cdn.shopify.com/s/files/1/0432/6827/6384/files/55374185563.pdf
    • https://cdn.shopify.com/s/files/1/0439/2170/3067/files/85295969362.pdf
    • https://cdn.shopify.com/s/files/1/0429/2981/5705/files/39793385632.pdf
    • https://cdn.shopify.com/s/files/1/0436/0699/9203/files/mezonuliki.pdf
    • https://cdn.shopify.com/s/files/1/0430/3791/7345/files/bowolumiwesasugadujumeto.pdf
    • https://cdn.shopify.com/s/files/1/0431/7852/4832/files/mokodejelojabekamis.pdf
    • https://cdn.shopify.com/s/files/1/0439/4595/1400/files/how_to_become_a_good_writer_and_speaker.pdf
    • https://cdn.shopify.com/s/files/1/0430/5167/9898/files/love_will_tear_us_apart_bass_tab.pdf
    • https://cdn.shopify.com/s/files/1/0448/4166/4669/files/porsche_pcm_manual.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_off0000952c.bin
8d1943c97d7ea0385785b42a1db5506d6fe3d4662c4c2bfbcd0c8f65eea68464
pdf-font-stream PDF embedded font (sfnt) at offset 0x952C 5484 bytes
font_01_sfnt_off0000a7b7.bin
d2cb4948e5604f080451916fa641978a6f86c1e9f3e24fa1560111a3da6f5994
pdf-font-stream PDF embedded font (sfnt) at offset 0xA7B7 10288 bytes