Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e7e8c71f402b6e7…

MALICIOUS

PDF

52.4 KB Authoring application: Serif PagePlus
MD5: 0f886274fe4d8a3c561b7b734ab777e1 SHA-1: 3ff553045cfb2700e0f1df65f6f18fdb8d08703d SHA-256: 4e7e8c71f402b6e7586f196559ac971fdaef8fc5c6db0fdf2a6441b433061fb7
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded URLs pointing to other PDF files across various domains, as indicated by the PDF_SEO_LINK_FARM heuristic. This suggests a link farm or content distribution network designed to manipulate search engine results or distribute malicious payloads. The ML classifier and ClamAV detection further support its malicious nature. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 3

  • 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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://rollingdoorsny.org/uploads/1/3/0/6/130604801/7df79a15803850.pdf
    • http://writing-raven.com/uploads/1/3/0/7/130740393/getumuli.pdf
    • http://dmgatl.com/uploads/1/3/0/2/130288401/pukotezesim.pdf
    • http://kithara.org.au/uploads/1/3/0/7/130739564/5228479.pdf
    • http://annenissen.com/uploads/1/3/0/8/130813797/xokeguta.pdf
    • http://stmatthewsvoorheesville.com/uploads/1/3/0/7/130776420/5344917.pdf
    • http://karizaharieva.com/uploads/1/3/0/5/130539279/3315184.pdf
    • http://thefashionablefarmgirl.com/uploads/1/3/0/5/130546574/9234907.pdf
    • http://schallisflyfishing.de/uploads/1/3/0/6/130639217/mojepa_vizifow.pdf
    • http://firehotrate.com/uploads/1/3/0/5/130543305/35885c0f7bd019.pdf
    • http://oregonictonickombucha.com/uploads/1/3/0/5/130551483/40f5b.pdf
    • http://sourcesounding.com/uploads/1/3/0/5/130542755/nisoxuve_lejajed_nusakabizi.pdf
    • http://mail.charlestonctc.com/uploads/1/3/0/6/130605351/dcad3ce6086c0.pdf
    • http://djmichaelsimon.com/uploads/1/3/0/7/130738909/48d662c8ce.pdf
    • http://mchenry-schutz.com/uploads/1/3/0/4/130479513/zonojijabimajuxoxik.pdf
    • http://myhralacarte.com/uploads/1/3/0/6/130621575/3fdd5158.pdf
    • http://bibledaily.com/uploads/1/3/0/8/130814457/6462334.pdf
    • http://mta-sts.naomibristow.com/uploads/1/3/0/7/130740458/rinisuvenajado-dakeviju-wibirivaz-jivivil.pdf
    • http://www.vantagetactical.net/uploads/1/3/0/5/130588188/2892262.pdf
    • http://learnfaces.com/uploads/1/3/0/7/130740046/boxifepufobo-dapebo-putedisuralus-xotejo.pdf
    • http://solucionesksm.com/uploads/1/3/0/7/130776516/183459.pdf
    • http://simplysamanthanyc.com/uploads/1/3/0/6/130605161/b89cf722637b3.pdf
    • http://www.geobiologiabarcelona.es/uploads/1/3/0/7/130775011/130775011.html#acls+quizlet+final

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000046b1.bin
1b3f82cd74c5b6671cc0c0d4a6c7877b74bb57ca469b2a61ef541918e41af838
pdf-font-stream PDF embedded font (sfnt) at offset 0x46B1 2652 bytes
font_01_sfnt_off00004f7e.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63
pdf-font-stream PDF embedded font (sfnt) at offset 0x4F7E 16036 bytes
font_02_sfnt_off00006735.bin
9e2bf7f151c5ee6fe2b4b0368447040878463a1a541fd4360f2f984af765f04c
pdf-font-stream PDF embedded font (sfnt) at offset 0x6735 9456 bytes