Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e4f11a66d3b851e…

MALICIOUS

PDF

42.2 KB Created: 2020-08-14 19:00:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: c0f184874a07cbe388da42371c5a752e SHA-1: d6ced8c6f7f44ea179cef00ef25e72bd534deb60 SHA-256: 6e4f11a66d3b851e5a469ec660edb180479a770c0611af9c33198cdd9f98fe08
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One of these links, 'https://ttraff.cc/pify?keyword=bccm+form+19', is identified as a malicious redirector. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to harmful content.

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=bccm+form+19 In PDF document text
    • http://rupuni.temploobaife.com/uploads/1/3/1/4/131454106/jofutamotoweza-dopakamesori-xijotej.pdfIn PDF document text
    • http://garawobok.ballyglasschildcare.net/uploads/1/3/1/4/131405927/8d23e774bec9003.pdfIn PDF document text
    • http://files.farmershelpers.com/uploads/1/3/0/7/130740127/5354781.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0546/8068/files/mimisikosovamomemog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/44603331863.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0982/4152/files/gakomigabonibarujid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/9886/0707/files/voxonigerebu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7689/4372/files/29187582709.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1141/5962/files/vande_mataram_song_lyrics_in_telugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8769/7822/files/91313786928.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/0273/7318/files/download_base64_javascript.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8960/0414/files/dragon_age_inquisition_mage_skill_tree_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6559/8364/files/bhagavad_gita_sanskrit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9341/6349/files/laboratory_experiments_in_microbiology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9613/7111/files/2007_honda_accord_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7323/9195/files/countries_in_the_world_list.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 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000689a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x689A 4864 bytes
SHA-256: dd23ce271956a31d0ae324ea862b78b8caa006586bfcf2b0908c788440fa9f42
font_01_sfnt_off0000791a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x791A 10228 bytes
SHA-256: 8b00dd7990c05bfbeeb5175de4e1e774c193ef6ee6b6efcf4150ecc32796bc73

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