Malicious PDF — malware analysis report

Static analysis result for SHA-256 de2461323a758fdd…

MALICIOUS

PDF

56.7 KB Created: 2020-08-28 04:02:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cddeb00f4367b4e62314b0e4174c7761 SHA-1: 1792c6d12643c04670f6d8fc8ab2a740d166b081 SHA-256: de2461323a758fdde87a18d437d4e49f9f21d5e28cbdbef081c52413230562e6
152 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://ttraff.com/pify?keyword=ducati+monster+797+service+manual', is flagged as a malicious redirector. The document body, though heavily obfuscated, appears to contain references to service manuals and the malicious URL, suggesting a lure to trick users into clicking the link. The presence of a large number of external PDF links also indicates a link farm, likely for SEO poisoning or to distribute 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.com/pify?keyword=ducati+monster+797+service+manual
    • http://files.ideas4kidsmentalhealth.org/uploads/1/3/0/7/130738852/digabutuzalokubusa.pdf
    • https://cdn.shopify.com/s/files/1/0435/4038/1855/files/vatoxe.pdf
    • https://cdn.shopify.com/s/files/1/0427/8996/1884/files/35840901693.pdf
    • https://cdn.shopify.com/s/files/1/0439/9307/1774/files/chakravyuha_songs_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0428/0818/0895/files/atropina_anestesia.pdf
    • https://cdn.shopify.com/s/files/1/0434/9663/6580/files/10920761876.pdf
    • https://cdn.shopify.com/s/files/1/0430/4188/2265/files/weluzekebel.pdf
    • https://cdn.shopify.com/s/files/1/0437/2175/2731/files/tufujoruwefifo.pdf
    • https://cdn.shopify.com/s/files/1/0437/6051/7274/files/.pdf
    • https://cdn.shopify.com/s/files/1/0434/2041/8198/files/editing_removing_pages.pdf
    • https://cdn.shopify.com/s/files/1/0446/6973/0979/files/panera_bread_lunch_menu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lufixupiz.pdf
    • https://cdn.shopify.com/s/files/1/0429/8014/7359/files/lirujakusopidor.pdf
    • https://cdn.shopify.com/s/files/1/0431/3533/6616/files/seranopafi.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_off000081ab.bin
d0f61de13158a2b47b97b960977606faae6e541a2e2012279f3e32bef1fe82f1
pdf-font-stream PDF embedded font (sfnt) at offset 0x81AB 5240 bytes
font_01_sfnt_off00009374.bin
aeeb0f1b18ba0f84e2d60e401a9ccf82b22b22b4e422e7a77a473177a418cdc5
pdf-font-stream PDF embedded font (sfnt) at offset 0x9374 14448 bytes
font_02_sfnt_off0000c053.bin
ea75db71c9df7250347a03039f742fcd189f5fc3f08964e696816fa8b5227073
pdf-font-stream PDF embedded font (sfnt) at offset 0xC053 16092 bytes