Malicious PDF — malware analysis report

Static analysis result for SHA-256 c59533284411bb47…

MALICIOUS

PDF

55.3 KB Authoring application: pdf-parser
MD5: 31d83d3763799e4210afa90ea904ff78 SHA-1: b19c049568bf389ced8b62486123757681a7ee08 SHA-256: c59533284411bb47ce5a50beac5efc24b624bdbed55bfdb1523d2774da4a7ef3
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, as detected by the PDF_SEO_LINK_FARM heuristic. This suggests a malicious intent to redirect users to potentially harmful content or to manipulate search engine rankings. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports the malicious classification. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://thesinglegirlsitinerary.com/uploads/1/3/0/9/130969322/368876.pdf
    • http://oildaletales.com/uploads/1/3/0/8/130813032/kitub.pdf
    • http://androoms.net/uploads/1/3/0/5/130550675/7901308.pdf
    • http://internmission.com/uploads/1/3/0/7/130739573/4422400.pdf
    • http://itemhustle.com/uploads/1/3/0/2/130270873/6007580.pdf
    • http://minigypsyhorse.com/uploads/1/3/0/5/130547771/xeganasepijetexudi.pdf
    • http://webmail.aikendrivingclub.com/uploads/1/3/0/6/130621110/1638453.pdf
    • http://beachdoulas.com/uploads/1/3/0/7/130775495/8006175.pdf
    • http://redfactoryaustralia.com/uploads/1/3/0/6/130639607/maguduxoxesezo.pdf
    • http://livingnow.ca/uploads/1/3/0/5/130588721/7381874.pdf
    • http://openrave.net/uploads/1/3/0/7/130739544/8937419.pdf
    • http://mysweatshops.com/uploads/1/3/0/6/130603748/rerepefus_mumirotonato_dukokivuvoguwo.pdf
    • http://fakap.org/uploads/1/3/0/7/130775792/509e5265e85.pdf
    • http://boredumb.com/uploads/1/3/0/7/130775768/05a4263ff7888.pdf
    • http://mpala.net/uploads/1/3/0/3/130313132/bobumapubigetaxo.pdf
    • http://ecoindustrialcoatings.com/uploads/1/3/0/5/130550703/fowumibusefe.pdf
    • http://bellandbly.com/uploads/1/3/0/6/130639982/kebevixu_didosuba_lexapomobike.pdf
    • http://kelleycarney.com/uploads/1/3/0/4/130476089/somuduf-zupopiku-dikalemi.pdf
    • http://wbcscholarship.com/uploads/1/3/0/6/130620293/vinaxeziwobolipuz.pdf
    • http://theogrossman.com/uploads/1/3/0/5/130544694/5861654.pdf
    • http://nerdypirate.com/uploads/1/3/0/6/130604227/4200553.pdf
    • http://chrisadlamnlp.com/uploads/1/3/0/6/130621077/302433.pdf
    • http://host12.pleasingfood.com/uploads/1/3/0/6/130620823/130620823.html#cordic+algorithm+for+logarithms

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004e18.bin
5a82c714a2c716501dabf8ff22bf2818c46cace8f3eeb208f73eeef37545f599		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E18 16244 bytes
font_01_sfnt_off0000638d.bin
b21bada742ee9c263ab718a27cb365e2905cdf85f8671ef66afdf55af97ab507		 pdf-font-stream PDF embedded font (sfnt) at offset 0x638D 4248 bytes
font_02_sfnt_off00007480.bin
696a05315cf00367d9cf2a72bde48842bc2f08dd5aa8be39f527e2f1e4a4a2c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7480 9104 bytes

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