Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec679b74156ef1f8…

MALICIOUS

PDF

74.5 KB Created: 2021-03-03 06:50:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b25184ecde8a259ff353b97b54ff93bf SHA-1: 5ab150ed620ab33e418b96925f95587c0edd16f7 SHA-256: ec679b74156ef1f89cb142f54514ba00505c74d4730fe2b6f4acd64735c39abd
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with the primary one being 'https://dafemum.ru/wix?keyword=old+connecticut+path+map', suggesting a phishing or malware distribution lure. Although no scripts were explicitly extracted, the presence of embedded URLs and the PDF structure itself often facilitate malicious actions such as redirecting users to compromised sites or initiating downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 https://dafemum.ru/wix?keyword=old+connecticut+path+map
    • http://remastacer.com/85285995303tdd4l.pdf
    • https://static.s123-cdn-static.com/uploads/4369491/normal_5feba07477d11.pdf
    • http://nasporte1.fun/silence_of_the_lambs_booknizc0.pdf
    • https://cdn.sqhk.co/kanemili/jKicdgf/sijopi.pdf
    • https://static.s123-cdn-static.com/uploads/4426277/normal_600738676a389.pdf
    • https://cdn.sqhk.co/vifejoneses/heQwijR/love_and_artistry_makeup.pdf
    • https://jitemino.weebly.com/uploads/1/3/0/9/130969659/4328592.pdf
    • https://cdn.sqhk.co/texirova/ifgcgic/my_talking_tom_friends_play_online_for_free.pdf
    • https://tomovomat.weebly.com/uploads/1/3/4/6/134617768/2498980.pdf
    • https://zodekunomaxuj.weebly.com/uploads/1/3/0/7/130739112/701a3.pdf
    • http://qwertyujg.xyz/zefobovedobjtk0.pdf
    • http://wamipivifubape.sportsontheweb.net/xarudanuvubumajuvowama.pdf
    • https://jipofaxinevafud.weebly.com/uploads/1/3/4/3/134350183/7449873.pdf
    • https://luwumevawosa.weebly.com/uploads/1/3/5/3/135322316/kamul-benajalutawev-xenuzixovi.pdf
    • http://wivaserana.mywebcommunity.org/27247663197.pdf
    • https://static.s123-cdn-static.com/uploads/4460241/normal_5fe53c87e6275.pdf
    • https://letuwolisabir.weebly.com/uploads/1/3/4/6/134602086/wegegumuxenixu_xonisek_vamomedoweseji_mufegef.pdf
    • https://cdn.sqhk.co/samekikogeri/hcD64ii/24359264855.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • 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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc1b.bin
45a338fc5faf179047af70e985085b46eee83ca1e6baed33665595c0ddb398f5
pdf-font-stream PDF embedded font (sfnt) at offset 0xDC1B 4948 bytes
font_01_sfnt_off0000ecbc.bin
49b7c9895d171c6b9604171b89aacfeb9afd53bdb0a290a12f04650d6e44ca38
pdf-font-stream PDF embedded font (sfnt) at offset 0xECBC 9940 bytes
font_02_sfnt_off00010edd.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x10EDD 4324 bytes