Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2301ba7757742ab…

MALICIOUS

PDF

34.8 KB Created: 2020-03-24 21:30:41 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 17534c673045df9b9948840dff3c59de SHA-1: a8ed59dbb64456db1c811136657a879e60d73777 SHA-256: f2301ba7757742abbe09e4591ccc398fab2f8aa728705c538f0f7eac014446be
94 Risk Score

Malware Insights

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

The PDF file was identified as malicious by an ML classifier with high confidence. It contains a large number of external links, a technique often used for SEO poisoning or to redirect users to phishing sites. The document body is heavily obfuscated, but the presence of numerous URLs pointing to various domains suggests a link farm or redirection strategy. No scripts were extracted from this sample.

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://nursingarmpillow.com/uploads/1/3/0/8/130814234/130814234.html#mmol+a+molar
    • http://www.mattsmentalhealths.com/uploads/1/3/0/5/130545421/xupetizonizelo.pdf
    • http://americangarageclassics.com/uploads/1/3/0/4/130483155/f2f14.pdf
    • http://noblerealtorpdx.com/uploads/1/3/0/6/130605403/puvolusuwojum.pdf
    • http://sipitgood.shop/uploads/1/3/0/7/130776233/3931137.pdf
    • http://fuck366.space/uploads/1/3/0/6/130621052/57ae5.pdf
    • http://www.overtuigd.com/uploads/1/3/0/4/130476033/zajoguki.pdf
    • http://thecreativelynk.com/uploads/1/3/0/5/130590478/dimifetexegupab.pdf
    • http://beautifulyoukatiealtobelli.com/uploads/1/3/0/4/130488312/9280792.pdf
    • http://sifuburhan.com/uploads/1/3/0/7/130739766/rubowop_fiwuzenovewazog_sefewugo_lovob.pdf
    • http://stockbroker-fraud-lawyer.com/uploads/1/3/0/4/130435596/a20ee9806c77.pdf
    • http://hostmaster.passionforparity.org/uploads/1/3/0/3/130379718/2025982.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_off0000613d.bin
a63ffc8938b468ddb1187a3f5ffc0a938715ba7f8b51cbf61513ebb4896655fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x613D 7652 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.