Malicious PDF — malware analysis report

Static analysis result for SHA-256 0feb40b2a6cd6abf…

MALICIOUS

PDF

43.4 KB Created: 2020-08-24 03:43:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d0c64e7b1225bdbc1cf0a6d4b3d146a6 SHA-1: a8b331fecc2b56ac10be34813a9523bdfb062e3a SHA-256: 0feb40b2a6cd6abfe82b4c816639c0129c85d8681194a3dba7e461c718bf6a51
154 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, specifically designed to lure users with a fake download for 'My Talking Tom 3'. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this behavior. The document body, though heavily obfuscated, contains the same malicious URL, indicating an attempt to disguise the malicious intent. The presence of numerous other PDF links suggests a link farm or SEO poisoning tactic to distribute the malicious content.

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.com/pify?keyword=my+talking+tom+3+apk+free
    • http://files.bestdealvacations.com/uploads/1/3/1/8/131856725/sekuvoxaruvamadike.pdf
    • http://files.trevorpollard.com/uploads/1/3/0/7/130776142/rapodoban_nisemonabuderi_kafijozozo.pdf
    • http://fujapufix.cityofamilliondreams.com/uploads/1/3/1/3/131380600/8a9405.pdf
    • http://tajegep.investphilippinestaiwan.com/uploads/1/3/1/1/131164250/6974af1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/1144/0803/files/68307017234.pdf
    • https://cdn.shopify.com/s/files/1/0429/2267/2284/files/wuguxelanufeli.pdf
    • https://cdn.shopify.com/s/files/1/0430/6613/0593/files/makalah_tentang_endometriosis.pdf
    • https://cdn.shopify.com/s/files/1/0429/5625/9491/files/1366980475.pdf
    • https://cdn.shopify.com/s/files/1/0431/0600/9242/files/zanilojabubesuziruxek.pdf
    • https://cdn.shopify.com/s/files/1/0431/1659/3312/files/14327649061.pdf
    • https://cdn.shopify.com/s/files/1/0434/8484/0089/files/85838704824.pdf
    • https://cdn.shopify.com/s/files/1/0433/2906/1032/files/66507620608.pdf
    • https://cdn.shopify.com/s/files/1/0431/6112/5015/files/kuvagabodivawamo.pdf
    • https://cdn.shopify.com/s/files/1/0434/7055/3238/files/retulebelupipozobuxujof.pdf
    • https://cdn.shopify.com/s/files/1/0431/0745/1029/files/wugikizokugazip.pdf
    • https://cdn.shopify.com/s/files/1/0432/9901/2766/files/xufazukezigujafodokoduje.pdf
    • https://cdn.shopify.com/s/files/1/0437/7785/1553/files/tomanitot.pdf
    • https://cdn.shopify.com/s/files/1/0434/0298/5626/files/technical_specifications_for_interoperability.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_off00005dfb.bin
c79db5abfe920b36a573b804e7b232663e3ecd55082fd36b974c5cd188e1336b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DFB 5380 bytes
font_01_sfnt_off0000703f.bin
0ee854a24b89f7ee8570bbc505c50a6667f3068117e125e0485dee6a0a160261		 pdf-font-stream PDF embedded font (sfnt) at offset 0x703F 2504 bytes
font_02_sfnt_off00007b26.bin
185c0384a46f0abe7deffc7283da3e8cffbc8043afa2d2d5a168e67af361812c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B26 10900 bytes

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