Malicious PDF — malware analysis report

Static analysis result for SHA-256 770e2956b2a10da9…

MALICIOUS

PDF

32.6 KB Authoring application: pstoedit First seen: 2020-09-24
MD5: 3026c1ed1086f16140b742aaaf0d3651 SHA-1: 936e65f3ea0378e0a54e9504410f8c17de4b89a6 SHA-256: 770e2956b2a10da9eeb247049e9f6a14846cb4e2c95c05f4409d8a1889fda8da
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified as a link farm. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically a phishing or redirection campaign. While no scripts were explicitly extracted, the heuristic 'PDF_SEO_LINK_FARM' suggests the document's primary purpose is to redirect users to a network of other PDF files hosted on various domains, likely for malicious SEO or to serve further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.
  • 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://dentalmesaaz.com/uploads/1/3/0/8/130814063/4766261.pdf In PDF document text
    • http://authortonjamurphy.com/uploads/1/3/0/4/130436163/249be.pdfIn PDF document text
    • http://0to100.ca/uploads/1/3/0/2/130289524/pukukaz.pdfIn PDF document text
    • http://halcyon-down.com/uploads/1/3/0/7/130738984/2204896.pdfIn PDF document text
    • http://functionallyfitbycarolyn.com/uploads/1/3/0/4/130488198/db1a7d96fb6.pdfIn PDF document text
    • http://webdisk.coprimag.com/uploads/1/3/0/6/130603890/4bf1893a.pdfIn PDF document text
    • http://lcdhh.org/uploads/1/3/0/7/130739001/3b39c35393b6b93.pdfIn PDF document text
    • http://brianoconnell.org/uploads/1/3/0/5/130551330/5577471.pdfIn PDF document text
    • http://www.mymalloryenglish218.com/uploads/1/3/0/2/130287488/7418913.pdfIn PDF document text
    • http://www.thewinterpark100.com/uploads/1/3/0/6/130621024/jaguxiwapamajivirav.pdfIn PDF document text
    • http://soque.net/uploads/1/3/0/5/130539034/likidavanikoki.pdfIn PDF document text
    • http://hostmaster.yektaeren.co.uk/uploads/1/3/0/3/130379113/govexifa.pdfIn PDF document text
    • http://kidztokidz.org/uploads/1/3/0/7/130738637/wopokigusanejoxukure.pdfIn PDF document text
    • http://6000hudson.com/uploads/1/3/0/2/130289244/poxizomozeri_zonaxemupol_tebizoluvizati.pdfIn PDF document text
    • http://artisanmadegemstones.com/uploads/1/3/0/4/130483863/ximuvufijak.pdfIn PDF document text
    • http://woodbridgenjplumbers.com/uploads/1/3/0/8/130874408/goduwubelazuna.pdfIn PDF document text
    • http://aireenp.com/uploads/1/3/0/2/130289392/gixaxaz_dunud_vijewupevabu_vakuvason.pdfIn PDF document text
    • http://fightchronicle.com/uploads/1/3/0/3/130323187/8179c2f.pdfIn PDF document text
    • http://brightnaidu.com/uploads/1/3/0/5/130550901/44f7c351298.pdfIn PDF document text
    • http://feralpictures.com/uploads/1/3/0/2/130291545/pizoluv.pdfIn PDF document text
    • http://www.dclatinonews.com/uploads/1/3/0/2/130274024/ruragiva_fexifaro_wezotafenen.pdfIn PDF document text
    • http://coachfro.com/uploads/1/3/0/5/130544132/zutifimi_bapifatowupix_liziwinasejipit.pdfIn PDF document text
    • http://indoorqualityaircody.com/uploads/1/3/0/5/130590208/130590208.html#adobe+premiere+pro+cs6+video+tutorialIn PDF document text
🗂 Part of campaign: 6000hudson.com 5 samples

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001fa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FA6 7128 bytes
SHA-256: 99f4905fb8588e1d4e99e708db32e184aac3cc3eefbf06d672676c28822d4e63