Malicious PDF — malware analysis report

Static analysis result for SHA-256 64a48d4e94f79942…

MALICIOUS

PDF

42.3 KB Created: 2020-08-07 14:16:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f48fa7818c328cca62a7b6b2c7b8598 SHA-1: ef004399924a7742db836ede14666c9342cb68dc SHA-256: 64a48d4e94f7994286a6181669feea708ba8f40ec6ccf212a5f6128ac6990da5
154 Risk Score

Malware Insights

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

The PDF contains a link farm and a redirector URL, indicating a phishing or scam attempt disguised as a manual. The embedded link `https://ttraff.cc/pify?keyword=bosch+ascenta+dishwasher+manual+pdf` is a known malicious redirector. The document body, though heavily obfuscated, contains text related to a Bosch dishwasher manual, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.cc/pify?keyword=bosch+ascenta+dishwasher+manual+pdf
    • http://files.marineflvs.net/uploads/1/3/1/4/131406843/4826989.pdf
    • http://files.msconnorswebsite.com/uploads/1/3/1/4/131406412/fogame.pdf
    • http://files.aucoproductions.org/uploads/1/3/1/4/131406390/671142.pdf
    • http://files.sgfbeef.com/uploads/1/3/1/4/131482881/gomezugibe_zudimemawiporin_tokokodimamuno.pdf
    • http://files.beautyonlinestore.co.uk/uploads/1/3/1/8/131871963/71079.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0446/7628/4569/files/another_vs_other.pdf
    • https://cdn.shopify.com/s/files/1/0432/5107/3174/files/geocontrol_2_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/4469/0337/files/kobijinagako.pdf
    • https://cdn.shopify.com/s/files/1/0431/2127/9138/files/92006431630.pdf
    • https://cdn.shopify.com/s/files/1/0439/1128/2840/files/tikovalanijedila.pdf
    • https://cdn.shopify.com/s/files/1/0433/6392/6174/files/lumegobososi.pdf
    • https://cdn.shopify.com/s/files/1/0432/2862/7108/files/pembuatan_bioetanol_dari_ampas_tebu.pdf
    • https://cdn.shopify.com/s/files/1/0429/1375/9395/files/20539354839.pdf
    • https://cdn.shopify.com/s/files/1/0430/3015/1330/files/nudugorupatuwawawuvoxiji.pdf
    • https://cdn.shopify.com/s/files/1/0434/1488/0405/files/kugurawa.pdf
    • https://cdn.shopify.com/s/files/1/0429/2149/2643/files/62371860771.pdf
    • https://cdn.shopify.com/s/files/1/0438/8922/9979/files/4828393049.pdf
    • https://cdn.shopify.com/s/files/1/0435/2868/3672/files/41431534585.pdf
    • https://cdn.shopify.com/s/files/1/0431/1865/7697/files/6839747312.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005964.bin
29ee3a3dea2df2d648ceef6eab97661912ee2db7dd7105debd5af5f895b504a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5964 5420 bytes
font_01_sfnt_off00006ba8.bin
a3209b626e2e952aa4dfdcea490bfa08d2741cd2bb4d9741d8300a238fe12f03		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BA8 10132 bytes
font_02_sfnt_off00008e25.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E25 4324 bytes

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