Malicious PDF — malware analysis report

Static analysis result for SHA-256 7721aeeef3f09107…

MALICIOUS

PDF

39.6 KB Authoring application: OpenOffice Draw
MD5: 13079e7bc298d8dc7e302390bc980525 SHA-1: d5067d8f094a371429a4bdc175eacd61921029ba SHA-256: 7721aeeef3f09107432ae1677f89ea689dd54e509eef11214026ceec23197d6e
192 Risk Score

Malware Insights

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

The PDF contains a large number of links to external PDF files hosted on various domains, indicating a link farm or SEO manipulation tactic. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or distributing further malware. No scripts were extracted from this sample, and the document body was heavily obfuscated and unreadable.

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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://usagaslogs.com/uploads/1/3/0/6/130603688/1672885.pdf
    • http://nancythedatingdiva.com/uploads/1/3/0/6/130621143/6434968.pdf
    • http://www.tanglewoodmiddleborough.com/uploads/1/3/0/5/130589094/8a2defd65c.pdf
    • http://nancerealtyservices.com/uploads/1/3/0/6/130620267/171ad78616.pdf
    • http://workingwoundedgames.org/uploads/1/3/0/2/130271060/2741276.pdf
    • http://dramacademy.com/uploads/1/3/0/2/130272925/771992.pdf
    • http://beyondjordanarise.com/uploads/1/3/0/4/130483961/mibotaf-xewabuxilig.pdf
    • http://consolineaudiovisual.com/uploads/1/3/0/7/130775606/dfd781ad13268.pdf
    • http://carveboard.com/uploads/1/3/0/7/130775723/7539f8823f4feb.pdf
    • http://www.welcome.iboihinn.com/uploads/1/3/0/6/130604902/6248569.pdf
    • http://mrjohnmiddleton.com/uploads/1/3/0/6/130620619/e8f2676816d1b.pdf
    • http://cpanel.anglia.id/uploads/1/3/0/3/130379381/wujoju.pdf
    • http://anisaalamia.com/uploads/1/3/0/5/130588625/sesoziji.pdf
    • http://www.camptruth.us/uploads/1/3/0/5/130590323/9936532a0c.pdf
    • http://www.gaillink.co.uk/uploads/1/3/0/7/130739007/sipemikasanoju.pdf
    • http://konnektuk.com/uploads/1/3/0/6/130621938/8975839.pdf
    • http://nazproekt.com/uploads/1/3/0/4/130483239/56995b41.pdf
    • http://www.towntaxservices.com/uploads/1/3/0/6/130621307/jajujozedaj.pdf
    • http://realtimecases.org/uploads/1/3/0/6/130621201/9647914.pdf
    • http://natinelflowerslinensandrentals.com/uploads/1/3/0/6/130639139/wekugiburupewun_wimagategoxa.pdf
    • http://www.downforacure.org/uploads/1/3/0/5/130550985/vazemukidobop.pdf
    • http://bananas.education/uploads/1/3/0/5/130589036/suwogodiv-vigelurufipar-vokigasebanagop.pdf
    • http://bastion.co.nz/uploads/1/3/0/2/130291433/7339061.pdf
    • http://dmcappraisals.com/uploads/1/3/0/6/130622068/9061736.pdf
    • http://supanconsulting.com/uploads/1/3/0/6/130604878/bavimoxaxovin.pdf
    • http://832.bpmtc.com/uploads/1/3/0/6/130621554/130621554.html#arti+lirik+lagu+a+million+dreams+the+greatest+showman

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003716.bin
d98f30de7022cbf25a2ba22f08d7a90d748a4646ff0b693ed69e5c875f6786cd
pdf-font-stream PDF embedded font (sfnt) at offset 0x3716 7664 bytes