Malicious PDF — malware analysis report

Static analysis result for SHA-256 a29bc78728dd75ce…

MALICIOUS

PDF

55.1 KB Created: 2020-08-10 23:34:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c30db5fdaaa85db1c6cef8e27f8e6a0 SHA-1: aeeb8341d0d369d553b3aeb625194e0de7f46db3 SHA-256: a29bc78728dd75ce9dd775d89fa13bd15e671768505b637514339a0b24a2656f
120 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 pointing to 'https://ttraff.com/pify?keyword=baumannii+bacteria+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the same redirector URL. The primary attack pattern involves luring the user to malicious infrastructure via a deceptive document.

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/pify?keyword=baumannii+bacteria+pdf
    • http://files.flatspokecycles.com/uploads/1/3/1/4/131408529/6549756.pdf
    • http://taxit.fitzgeraldbenhillartscouncil.org/uploads/1/3/2/8/132814930/9428513.pdf
    • http://files.greatlakesfrequencies.com/uploads/1/3/1/0/131070579/dcefeb2.pdf
    • https://cdn.shopify.com/s/files/1/0445/3564/4319/files/data_center_management.pdf
    • https://cdn.shopify.com/s/files/1/0430/9496/6436/files/30540626267.pdf
    • https://cdn.shopify.com/s/files/1/0427/7328/2983/files/fisom.pdf
    • https://cdn.shopify.com/s/files/1/0438/8497/0139/files/47698544641.pdf
    • https://cdn.shopify.com/s/files/1/0433/0671/3253/files/1657170261.pdf
    • https://cdn.shopify.com/s/files/1/0435/6263/1326/files/sulowepekoxota.pdf
    • https://cdn.shopify.com/s/files/1/0447/9975/4397/files/english_phonetics_and_phonology_peter_roach_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/6763/7922/files/fagebadek.pdf
    • https://cdn.shopify.com/s/files/1/0431/8606/1463/files/andragogy_books.pdf
    • https://cdn.shopify.com/s/files/1/0437/5517/6097/files/aditya_hrudayam_telugu_meaning_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/6888/3098/files/70556228795.pdf
    • https://cdn.shopify.com/s/files/1/0430/3113/4365/files/ruropazekezaxosonunedivar.pdf
    • https://cdn.shopify.com/s/files/1/0433/4118/5189/files/5156344463.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/xanolujivomaremigidopu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1969/7308/files/list_of_daily_use_english_words_with_urdu_meaning.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000883d.bin
7f89a4042dfb9a657cc6e28b1e29dc0fbb1d167fa7c20201e5c242083d65776c
pdf-font-stream PDF embedded font (sfnt) at offset 0x883D 5052 bytes
font_01_sfnt_off0000993e.bin
71c7f9d9071bffeabe4024aef0462785c8f50a4e549a73ee5379eb60eed93935
pdf-font-stream PDF embedded font (sfnt) at offset 0x993E 12304 bytes
font_02_sfnt_off0000c0b7.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0xC0B7 4324 bytes