Malicious PDF — malware analysis report

Static analysis result for SHA-256 2be1c0fb140600a9…

MALICIOUS

PDF

38.2 KB Created: 2020-06-11 20:07:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 380e3caccb0924aa9e3bfa7254dcc0f9 SHA-1: a2b82c6a4e651df54cbc2eb68b9da036cbca5ea8 SHA-256: 2be1c0fb140600a991d2d875882163c43a1e3104a445b13670d39fd3670d0ba5
94 Risk Score

Malware Insights

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

The PDF contains a large number of external links, a technique often used for SEO spam or to redirect users to malicious sites. The ML classifier strongly indicated maliciousness. The document body itself is largely unreadable, but the presence of numerous URLs pointing to domains like 'footballernow.com' and 'whistleblowingteachers.com' suggests a link farm or redirection scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://cpanel.footballernow.com/uploads/1/3/0/6/130639510/130639510.html#year+3+measurement+worksheets
    • http://whistleblowingteachers.com/uploads/1/3/1/8/131857535/kerebitujog.pdf
    • http://brbydaniella.com/uploads/1/3/0/8/130874067/tiditusesalekat-xagisoxafupejem.pdf
    • http://saltnshe.com/uploads/1/3/0/6/130604544/dexatoku-tolow-vabuxefiderufe.pdf
    • http://marine-ropes.net/uploads/1/3/0/2/130287738/disonojotapux_jubevibugadik_xajebovefijivup_kemedomuwoz.pdf
    • http://meulemanracingpigeons.com/uploads/1/3/1/3/131383453/vasebud.pdf
    • http://ltobmusic.com/uploads/1/3/0/8/130813781/jedewiw_tofupuvogu_moxire_xakal.pdf
    • http://countmarketing.com/uploads/1/3/0/2/130289799/tirufatekitu_nigoxudesovopis_fokobafozujisof.pdf
    • http://investigatenyc.com/uploads/1/3/0/8/130814176/jatefeporufopiwo.pdf
    • http://windowsnoco.com/uploads/1/3/0/5/130539842/babe4d8.pdf
    • http://collisterscarecrow.org/uploads/1/3/0/9/130969844/9052979.pdf
    • https://tezebarorol.files.wordpress.com/2020/06/baxevefetizujaxopujusowis.pdf
    • https://nuzerazuriwo658093982.files.wordpress.com/2020/06/69648958708.pdf
    • https://dipirikufuda.files.wordpress.com/2020/06/46227576590.pdf
    • https://kazilime338310578.files.wordpress.com/2020/06/75184134351.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006786.bin
0c632bf0fd2b54e272b634f0adb50e104a7f305e10006a0d9975c2372a23b09f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6786 10500 bytes

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