Malicious PDF — malware analysis report

Static analysis result for SHA-256 1627ba6ea0a633a2…

MALICIOUS

PDF

53.2 KB Created: 2020-08-05 16:18:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d74a06ab7bfe613801699b197b4bf8dd SHA-1: 44eb9f251338e61345b6bdfd89db47bb7509ea20 SHA-256: 1627ba6ea0a633a267eae0f4cfbb5f8e90af7321860ea57c3e6e63663aa574eb
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This URL is presented as a tutorial PDF, but it redirects to other PDF files, likely as part of a link farm or SEO abuse to obscure malicious intent. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the embedded URLs and the redirector behavior indicate a phishing or redirection scheme.

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=autocad+autolisp+tutorial+pdf
    • http://files.thisisfire.org/uploads/1/3/2/7/132740692/5d8f7c34ff.pdf
    • http://files.hudsonvalleygarlicgrowers.com/uploads/1/3/1/0/131070859/gabugalam-pugobajepir.pdf
    • http://files.watips.net/uploads/1/3/0/9/130969085/tefiwibajizu-pokotuvotaxomi-tikeg.pdf
    • http://xobapu.ldowingslaw.com/uploads/1/3/2/6/132695663/vofikufu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/70354855800.pdf
    • https://cdn.shopify.com/s/files/1/0430/8588/9689/files/webmail_uth_tmc.pdf
    • https://cdn.shopify.com/s/files/1/0440/6339/1894/files/executive_protection.pdf
    • https://cdn.shopify.com/s/files/1/0434/3149/3784/files/98962609930.pdf
    • https://cdn.shopify.com/s/files/1/0429/3437/0470/files/maposakune.pdf
    • https://cdn.shopify.com/s/files/1/0437/3417/1800/files/epsilon_alt_code.pdf
    • https://cdn.shopify.com/s/files/1/0435/9664/4511/files/87972595893.pdf
    • https://cdn.shopify.com/s/files/1/0431/9032/1313/files/20161081702.pdf
    • https://cdn.shopify.com/s/files/1/0439/9045/0334/files/jalaruvibolokigeguv.pdf
    • https://cdn.shopify.com/s/files/1/0430/2081/2441/files/fivem_prop_list.pdf
    • https://cdn.shopify.com/s/files/1/0434/3624/5142/files/vodojelal.pdf
    • https://cdn.shopify.com/s/files/1/0432/7355/2040/files/roxoroxofexijuf.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_off00008023.bin
d0f9ae40a518e9c1336138f3abac604c3eb1795e3326283c4a4505f7244a195c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8023 4796 bytes
font_01_sfnt_off0000907e.bin
f24702b24269f3838a57d4a97bcfa65c33142f7c9a408308485bd19008a08a2c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x907E 13440 bytes
font_02_sfnt_off0000b9c6.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB9C6 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.