Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4b7e0731dcf9b14…

MALICIOUS

PDF

38.7 KB Authoring application: PDF Studio
MD5: 13c3dcf942813beef2ead439d466fe65 SHA-1: 1edfab7d71e553dd2ccffd632784ddc89f88d99f SHA-256: f4b7e0731dcf9b1413d6cfe64cbac5d35f910a568dcc33bda2d694b3580bb0e0
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical PDF_SEO_LINK_FARM rule, indicating a large number of external links. The ML classifier and ClamAV also identified it as malicious. The document body contains numerous URLs, with the primary one being http://0706shpps04.fun/uploads/2020/01/28/guralerikivig.pdf. This suggests the document's purpose is to lure users into clicking these links, likely leading to phishing pages or malware downloads.

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://0706shpps04.fun/uploads/2020/01/28/guralerikivig.pdf
    • http://pulquetour.com/uploads/1/3/0/2/130289426/5837157.pdf
    • http://kavexex.klondike-gold.info/uploads/2020/01/28/4440cd7.pdf
    • http://xipa.soho-sumki.icu/uploads/2020/01/28/1394132.pdf
    • http://josewuge.kek.su/uploads/2020/01/27/d2bcb41002c.pdf
    • http://usafachapters.org/uploads/1/3/0/4/130483087/4796816.pdf
    • http://narskuuttelu.com/uploads/1/3/0/6/130605422/mowilefetewezuzax.pdf
    • http://nikonmalta.com/uploads/1/3/0/3/130379675/dujozix.pdf
    • http://dorisreed.weebly.com/uploads/1/3/0/6/130605072/9ab9a3275.pdf
    • https://dixamexujaz.weebly.com/uploads/1/3/0/5/130589006/236a46b.pdf
    • http://nak.atrilmedia.com/uploads/2020/01/27/maxawuresijilegin.pdf
    • http://nowhitmoreorless.com/uploads/1/3/0/3/130323406/8924385.pdf
    • http://guk.skazkashow.ru/uploads/2020/01/28/3f4880.pdf
    • http://zetrocroofing.com/uploads/1/3/0/6/130604349/jujejugapezisokapi.pdf
    • http://runninghorses.org/uploads/1/3/0/5/130539016/jolanidobedev-xobazogogojo-fubitemafozodow.pdf
    • http://besinfinityinspections.com/uploads/1/3/0/5/130541116/d8193fef4b.pdf
    • https://deradukosi.weebly.com/uploads/1/3/0/5/130589102/mavesunivos.pdf
    • http://jccoach.com/uploads/1/3/0/6/130604061/2700571.pdf
    • https://vibasaxenoxu.weebly.com/uploads/1/3/0/4/130488698/2853127.pdf
    • http://neubacher.vafercapital.com/uploads/1/3/0/5/130588692/6419299.pdf
    • http://doeatjangkir.com/uploads/1/3/0/2/130271148/d60c65b9c.pdf
    • http://speed-gemmes.com/uploads/1/3/0/5/130540104/2048005.pdf
    • http://big-saleco.club/uploads/2020/01/27/badud.pdf
    • http://colddiamnd.com/uploads/1/3/0/5/130539315/130539315.html#nervous+system+worksheet+pdf+middle+school
    • http://big-saleco.club/uploa

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001658.bin
331ef967dd261001e8b2e788faa21d94dd4b32c4c795c5ecab494639720c784a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1658 7928 bytes

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