Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1aecfb3240166aa…

MALICIOUS

PDF

39.8 KB Created: 2020-08-14 16:11:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 30b7a55accf9a04ec61ea16ffc1dc490 SHA-1: a31447610405c646f6b6484f82e07c2fc5486785 SHA-256: f1aecfb3240166aade362d671b8ed43524652e8831c0f01106ff1b7cf4a7970e
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=individual+development+plan+form+template'. The document body also contains this URL, suggesting the intent is to redirect the user to malicious infrastructure under the guise of a development plan template. Additionally, the PDF exhibits characteristics of a link farm, with numerous external links, including one to 'https://cdn.shopify.com/s/files/1/0431/6528/6549/files/you_and_me_lifehouse_lyrics.pdf'.

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=individual+development+plan+form+template
    • http://files.svgreatschools.org/uploads/1/3/1/4/131407194/jorosemija.pdf
    • http://files.foodsfourthought.com/uploads/1/3/0/8/130873741/9b91b464178e53.pdf
    • http://files.letspaintarabic.com/uploads/1/3/2/8/132815123/lilezezedumisuvix.pdf
    • http://lujiwi.centerpointetherapistsllc.com/uploads/1/3/1/4/131453060/xuzikabasakene.pdf
    • https://cdn.shopify.com/s/files/1/0431/6528/6549/files/you_and_me_lifehouse_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0429/6713/8470/files/bezobutiliragimodigikab.pdf
    • https://cdn.shopify.com/s/files/1/0429/2762/0249/files/bovokosulagagukerobede.pdf
    • https://cdn.shopify.com/s/files/1/0432/2390/8520/files/guia_ceneval_egel_enfermeria.pdf
    • https://cdn.shopify.com/s/files/1/0447/7832/4117/files/renaming_file_in_unix.pdf
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/bijekaburuwomikisobefuk.pdf
    • https://cdn.shopify.com/s/files/1/0429/0645/2127/files/fegujesosikotidajoles.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ee8.bin
bafe4407a67766e52b727d62c8423fa93ad7699cf12be1eaef4d2fbc0d0ffbcf
pdf-font-stream PDF embedded font (sfnt) at offset 0x5EE8 5008 bytes
font_01_sfnt_off00006fdd.bin
c7a77c3c66151e1aabdbc1bfbbe35054a323e992d1235ef42cec3f672394356a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FDD 10128 bytes