Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dcf43267e8f557e…

MALICIOUS

PDF

41.9 KB Authoring application: Smallpdf Desktop
MD5: d74010f53a823db6c800afcd358b77aa SHA-1: b988ce7695392c5e1330534dbccce2b2eb0f9af2 SHA-256: 2dcf43267e8f557e78e3646657cc7f579a4cdc841741f008b64c411f634b0c16
150 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical PDF_SEO_LINK_FARM rule indicating a mass external link farm. The ML classifier also assigned a high probability of maliciousness. The embedded URLs point to numerous PDF files hosted on various domains, suggesting a campaign focused on distributing content through a large network of linked PDFs. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://amazoningleads.com/uploads/1/3/0/5/130551356/8765941.pdf
    • http://americanlighting.org/uploads/1/3/0/7/130740391/2163289.pdf
    • http://pije.gadanija.online/uploads/2020/01/28/2388495.pdf
    • http://mysaddlefitter.net/uploads/1/3/0/5/130588783/8292835.pdf
    • http://summerpodcastinstitute.com/uploads/1/3/0/6/130603895/c453afe795.pdf
    • http://ocwpublishing.com/uploads/1/3/0/6/130620431/pagogum.pdf
    • http://portraits.meliraphoto.com/uploads/1/3/0/3/130312986/nigajub.pdf
    • http://starbunkering.com/uploads/1/3/0/5/130589218/vuxagajifi-wolatujokaba-lunupegulokuda.pdf
    • http://norwegianmade.com/uploads/1/3/0/4/130435726/jikinewogedu.pdf
    • http://blackhillsbiking.com/uploads/1/3/0/5/130539002/wexibujipix.pdf
    • http://greenloopchallenge.org/uploads/1/3/0/8/130873790/2607539.pdf
    • http://emilyburdettphotography.com/uploads/1/3/0/6/130621575/sinilisozoriwokoja.pdf
    • http://tarolov.aroma-piter.ru/uploads/2020/01/28/sijovopiso.pdf
    • http://myelizabethsanchez.com/uploads/1/3/0/6/130621161/2911331.pdf
    • http://whatthetruckgr.com/uploads/1/3/0/6/130639941/4786423.pdf
    • http://sandeebrown.com/uploads/1/3/0/8/130813644/9675049.pdf
    • http://biexecutive.com/uploads/1/3/0/5/130539672/gijud.pdf
    • http://ulessor.com/uploads/1/3/0/4/130436250/9677770.pdf
    • http://cecilyeiferle.com/uploads/1/3/0/8/130874146/130874146.html#caracteristicas+de+los+aromaticos+quimica+organica
    • http://starbunkering.com/uploads/1/3/0/5/130589218/vuxagajifi-wolatujokaba-lunup

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004386.bin
9b07981ccb909ed1127f606f423feaaaa8b024e9c289480ef2c987bbdb2f019a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4386 9752 bytes

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