Malicious PDF — malware analysis report

Static analysis result for SHA-256 06aadd3aa0eb92a8…

MALICIOUS

PDF

39.2 KB Created: 2020-08-26 00:32:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 801aa9f6fa6a2c401a1e011d19f12d08 SHA-1: dd40339eb22963fdf4775de51221a3ac8cb357a4 SHA-256: 06aadd3aa0eb92a8937bc5dcc32c817c3d52c6adb73c1dd2589b71f52e87d2fe
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for a download, and the ML classifier strongly indicates maliciousness. The primary malicious URL is identified as a redirector, likely leading to further malicious content or a phishing page.

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.club/pify?keyword=dvsn+think+about+me+download
    • http://files.kipawa.org.uk/uploads/1/3/0/7/130739945/4774196.pdf
    • http://nojego.flomonacolcsw.com/uploads/1/3/1/3/131384082/4971662.pdf
    • http://laxamug.jbcoachescorner.com/uploads/1/3/2/3/132303195/kikete.pdf
    • http://wodok.ceasefirebusinessassociates.com/uploads/1/3/2/6/132695832/50d0454109f77.pdf
    • http://files.danielabend.com/uploads/1/3/1/8/131856039/rukaxovijop-jilawebevejesu-gafokasexi-bitelepuv.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/6275/4461/files/56132551257.pdf
    • https://cdn.shopify.com/s/files/1/0431/1321/8210/files/zikoseroza.pdf
    • https://cdn.shopify.com/s/files/1/0432/6971/8182/files/togakure_ryu_ninpo_taijutsu.pdf
    • https://cdn.shopify.com/s/files/1/0429/7749/3146/files/walapebexu.pdf
    • https://cdn.shopify.com/s/files/1/0428/1293/2255/files/sujaxuzodiwozifurakiv.pdf
    • https://cdn.shopify.com/s/files/1/0438/5849/3600/files/craftsman_lt_1500_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/0023/3112/files/13659530621.pdf
    • https://cdn.shopify.com/s/files/1/0432/0280/5921/files/accordance_shelly_crane_italiano.pdf
    • https://cdn.shopify.com/s/files/1/0431/3966/1981/files/95631797301.pdf
    • https://cdn.shopify.com/s/files/1/0430/9693/2505/files/78433816339.pdf
    • https://cdn.shopify.com/s/files/1/0429/8758/5699/files/lafatufefe.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_off00005ab6.bin
ee35e1ce173e515b4bf849de90708a6bad4e2d865ff698e764962a9f15be3b6f
pdf-font-stream PDF embedded font (sfnt) at offset 0x5AB6 5324 bytes
font_01_sfnt_off00006cb7.bin
763133485d033d363845e72d07efa63f5ad99708c77393d3b5dd599e04c94fa8
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CB7 10420 bytes