Malicious PDF — malware analysis report

Static analysis result for SHA-256 183870b2099ebf6e…

MALICIOUS

PDF

46.0 KB Authoring application: pstoedit
MD5: 7a4f95d9930bae76b9ddcf94cf95fc6d SHA-1: 386c72f9f8923f9529934039d75f979f4e44b7d6 SHA-256: 183870b2099ebf6e1f38b0b76ce436a48a41863b6e8a8ad25b19cda876247c59
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics, including a critical PDF_SEO_LINK_FARM rule, indicating it contains a large number of external links. The embedded URLs suggest a link farm or SEO manipulation tactic, potentially leading to malicious content or phishing sites. While no scripts were explicitly extracted, the nature of the PDF and the numerous external links strongly suggest it's part of a malicious campaign, likely involving spearphishing.

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://cunninghamsinnovations.com/uploads/1/3/0/6/130604494/nalizi.pdf
    • http://onelegchallenge.org/uploads/1/3/0/4/130483902/00a8c1768.pdf
    • http://sobo.myta-salon.ru/uploads/2020/01/28/7d3706961b6.pdf
    • https://xesivako.weebly.com/uploads/1/3/0/6/130605115/mamizuwobe_mowava_larewokosire.pdf
    • http://newlifefitz.org/uploads/1/3/0/2/130287976/9079946.pdf
    • http://stanleycovington.com/uploads/1/3/0/4/130476493/191501.pdf
    • http://sitemuse.org/uploads/1/3/0/4/130436315/givaretoragole.pdf
    • http://adams-aardvarks.com/uploads/1/3/0/6/130603728/toxoveloz.pdf
    • http://jukeboxarcade.com/uploads/1/3/0/6/130639019/1742683.pdf
    • http://dodos.arenda-apparata.ru/uploads/2020/01/27/migoxaluvedu.pdf
    • http://sshvug.com/uploads/1/3/0/3/130313634/8489590.pdf
    • http://teleboost.online/uploads/2020/01/28/xiwixumimesevax.pdf
    • http://luvevi.chwichen.com/uploads/2020/01/28/lusafupa.pdf
    • https://penitasozazup.weebly.com/uploads/1/3/0/6/130604742/juranusosuv_sobovumep.pdf
    • https://nogotitafa.weebly.com/uploads/1/3/0/5/130590296/9554353.pdf
    • http://lanatureetlebienetre.com/uploads/1/3/0/6/130604949/310d053781be76.pdf
    • https://vezirekawadas.weebly.com/uploads/1/3/0/5/130539642/d14ea0bd.pdf
    • http://flowito.com/uploads/2020/01/29/1544808.pdf
    • http://judig.tamita-tami.pro/uploads/2020/01/28/tawatogofimikivuwes.pdf
    • http://sopa.sleepgid.ru/uploads/2020/01/29/702473.pdf
    • http://dexoclothing.com/uploads/1/3/0/5/130540585/biwoputakej.pdf
    • http://barbershopyyc.com/uploads/1/3/0/5/130590297/wisenaxenejefiso.pdf
    • http://thegatlinburgtourister.com/uploads/1/3/0/3/130323342/jimizifu-vufiladeta-vujakegat.pdf
    • http://575creativecrafting.com/uploads/1/3/0/5/130588784/2363553.pdf
    • http://jop.voloklinik.com/uploads/2020/01/27/zozuw-jipetumi-rejosoruvubuw-nebupiwunesegup.pdf
    • http://mymissblue.com/uploads/1/3/0/5/130551927/130551927.html#text+me+merry+christmas+sheet+music+pdf
    • http://www.adobe.com/).Noto
    • http://www.google.com/get/noto/http://www.adobe.com/type/This
    • http://scripts.sil.org/OFLNoto

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001749.bin
6005447d842353aff69b4edf18daf425f2196ee98268abccd75dc9fd925867d0
pdf-font-stream PDF embedded font (sfnt) at offset 0x1749 9440 bytes
font_01_sfnt_off0000757c.bin
650526cd053203bbabcbb8363bb14c6a98c6ed237a7b6f70964fcc3ca3867fa9
pdf-font-stream PDF embedded font (sfnt) at offset 0x757C 4376 bytes