Malicious PDF — malware analysis report

Static analysis result for SHA-256 b54be8add424717e…

MALICIOUS

PDF

44.7 KB Created: 2020-07-13 04:58:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 91311e0bad8786a39b2bb56437f03472 SHA-1: 78b757a004122c4fe70acacc36bd1c1024bb09bf SHA-256: b54be8add424717ee1e098c9c5467f7de0bd34dd1577710d624adb3e6c1008f7
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One critical heuristic firing indicates a malicious redirector link to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to academic papers, suggesting a lure to disguise the malicious intent. The primary attack pattern involves redirecting users to potentially harmful websites.

Heuristics 3

  • 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.
  • 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/wb?keyword=jurnal%20radikalisme%20mahasiswa%20pdf
    • http://files.azzurrawebart.com/uploads/1/3/1/4/131453284/05f0b.pdf
    • http://files.gathering-of-light.com/uploads/1/3/1/4/131407734/1981766.pdf
    • http://files.techinfinityconsulting.com/uploads/1/3/1/1/131164350/xibuxefojaletuwiwu.pdf
    • http://files.ypsummitvt.com/uploads/1/3/0/7/130739340/deae037.pdf
    • https://forakij.files.wordpress.com/2020/06/jukugepodedu.pdf
    • https://jakazikosab.files.wordpress.com/2020/06/zatavujomatusuxilelutow.pdf
    • https://koxezapujuf.files.wordpress.com/2020/07/jazarewilejezetu.pdf
    • https://ribulefimor.files.wordpress.com/2020/06/nojejufe.pdf
    • https://zivuwisi.files.wordpress.com/2020/07/45770586793.pdf
    • https://murivavuj.files.wordpress.com/2020/07/92053919077.pdf
    • https://faxuroxelato.files.wordpress.com/2020/07/nufinikitawamatawirotate.pdf
    • https://savosara296555637.files.wordpress.com/2020/07/lejifelewefatub.pdf
    • https://bafotux.files.wordpress.com/2020/07/sowisagavumixosibatuzilep.pdf
    • https://cdn.shopify.com/s/files/1/0429/3391/1705/files/8646398048.pdf
    • https://cdn.shopify.com/s/files/1/0429/5199/9637/files/34736905719.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37394074323.pdf
    • https://cdn.shopify.com/s/files/1/0430/0436/2906/files/talugenunojigu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/24413790208.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rirolor.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/70838758317.pdf
    • https://cdn.shopify.com/s/files/1/0429/1395/6006/files/fepavaxemoro.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lujodegiduwidixerilaji.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/
    • https://zivuwisi.files.wordpress.com/2020/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007141.bin
e16e6e5200104386a6eea32f6abb639276ed29c30d21dd7b4becc2c829d69be1
pdf-font-stream PDF embedded font (sfnt) at offset 0x7141 5120 bytes
font_01_sfnt_off0000827a.bin
d9da5d0da5980a64a54bafc7067357015222e230bbfaa253dbd26e148002188c
pdf-font-stream PDF embedded font (sfnt) at offset 0x827A 10164 bytes