Malicious PDF — malware analysis report

Static analysis result for SHA-256 414ffbb3b839ca86…

MALICIOUS

PDF

46.8 KB Created: 2020-08-23 13:24:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 330892781a4785f5c06c640dc7f5e79b SHA-1: c9572be0f5daf814ea2177f0a6610d54209bcae4 SHA-256: 414ffbb3b839ca86559098865855053aec0da917d1ec7b3c758022383a017576
152 Risk Score

Malware Insights

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

The PDF contains embedded links that are part of a link farm, with one critical heuristic identifying a redirector to known malicious infrastructure. The document body, though heavily obfuscated, contains a reference to 'Superman movie 2016' and the malicious URL, suggesting a lure. The primary malicious URL is https://ttraff.cc/pify?keyword=superman+movie+2016, which is designed to redirect users to further malicious 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=superman+movie+2016
    • http://sutulafas.uhbands.org/uploads/1/3/0/8/130874260/50d924.pdf
    • http://files.annapike.co.uk/uploads/1/3/1/1/131164016/1071811.pdf
    • https://cdn.shopify.com/s/files/1/0448/1276/3298/files/vk_video_search.pdf
    • https://cdn.shopify.com/s/files/1/0433/6707/1894/files/tubonemew.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pufabupenidobuxix.pdf
    • https://cdn.shopify.com/s/files/1/0430/9617/8845/files/16821349941.pdf
    • https://cdn.shopify.com/s/files/1/0438/5603/6005/files/medigizozesawamuzumi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/datumaf.pdf
    • https://cdn.shopify.com/s/files/1/0430/8510/3255/files/lipugunesibimitaf.pdf
    • https://cdn.shopify.com/s/files/1/0430/1612/6625/files/16140929083.pdf
    • https://cdn.shopify.com/s/files/1/0433/6808/7711/files/zorodukovuzasi.pdf
    • https://cdn.shopify.com/s/files/1/0436/0480/3746/files/92182311948.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_off0000695d.bin
3faf75d934d1bb8a4b5dc2e84a51d5ad92a2d8f0ff305415a78d16e2ec101cb5
pdf-font-stream PDF embedded font (sfnt) at offset 0x695D 5200 bytes
font_01_sfnt_off00007ae5.bin
ee71f0329e004b1ea6614d8551c292dfd81c24fd9d739ce43a0291d28c09f00c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AE5 10980 bytes
font_02_sfnt_off0000a06a.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0xA06A 4324 bytes