Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d1ab3d7d94045d3…

MALICIOUS

PDF

32.2 KB Created: 2020-05-18 18:46:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b530ba6bb340efd44c253662e514869c SHA-1: 0900f39e9a7c6c2a73a3fa3426153f5192ff1a5d SHA-256: 4d1ab3d7d94045d3e07974e4028e599d086a88dff864785e7eaf9e03e6798a3c
92 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various PDF files on different domains. The ML classifier also strongly indicated maliciousness. This suggests the document is part of a link farm or SEO poisoning scheme, potentially designed to distribute malware or engage in phishing by luring users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://blackhawbuilders.com/uploads/1/3/0/7/130739294/130739294.html#panasonic+blu+ray+player+dmp-bd77+manual
    • http://scottsavell.com/uploads/1/3/0/6/130620909/dixebuguse.pdf
    • http://iftardeals.com/uploads/1/3/0/2/130271229/gigafubowivaju-lejatilabon-xemimiv-togugarekotulef.pdf
    • http://onlygodcanjudgeus.com/uploads/1/3/1/3/131398017/gokavizubufelulugo.pdf
    • http://esdaw.org/uploads/1/3/0/8/130874347/suguw_nisalilemunet.pdf
    • http://pasadena-rc.com/uploads/1/3/0/3/130313183/6131869.pdf
    • http://justjimmusic.com/uploads/1/3/0/5/130590521/zaraguwit.pdf
    • http://altobassist.com/uploads/1/3/0/4/130478433/7533979.pdf
    • http://toocrafty.com/uploads/1/3/0/6/130639518/bodosixeka.pdf
    • http://deirdrebergeron.com/uploads/1/3/0/8/130813649/5116015.pdf
    • http://multiviewglassesonline.com/uploads/1/3/0/5/130588545/keviwavawu.pdf
    • http://vanessabarreto.com/uploads/1/3/1/3/131379039/ec8a99c9.pdf
    • http://joy-farm.com/uploads/1/3/1/4/131453944/gaxojeli.pdf
    • http://facultyretreat.org/uploads/1/3/1/8/131857243/9975841.pdf
    • http://hrningidraetscenter.com/uploads/1/3/1/8/131871951/kenubilisazoxo_pujodelagufe_buxuzikiwabul_korizomefo.pdf
    • http://theseancetattooparlor.com/uploads/1/3/0/6/130621815/raliza.pdf
    • http://triplenetmarketplace.com/uploads/1/3/1/4/131437330/fagamategixa.pdf
    • http://livingthepondlife.org/uploads/1/3/0/4/130488884/a3bd181.pdf
    • http://brandoneldredge.com/uploads/1/3/0/4/130488228/4c371d3d01.pdf
    • http://karmacleaning206.com/uploads/1/3/0/5/130539922/zedolom-nimetenopunatu-nilepumakazime-finidesinig.pdf
    • http://partywithbows.com/uploads/1/3/0/3/130313013/3910742.pdf
    • http://opencampus.org/uploads/1/3/0/8/130873869/biliki_fefemegev.pdf
    • http://juliusgibbs.com/uploads/1/3/1/3/131384306/745287.pdf
    • http://eos-cbd.com/uploads/1/3/1/8/131857247/lusanimikememobu.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_off0000569a.bin
7dad4eaf25ec991f876d617f8334ddbc3ceaea25f626a4c99e1c5f2cb179a7d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x569A 8780 bytes

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