Malicious PDF — malware analysis report

Static analysis result for SHA-256 db0d04060468a4a0…

MALICIOUS

PDF

33.6 KB Created: 2020-08-28 14:59:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e30cb18f770a223b4183afa0920a5f10 SHA-1: 7dc4d54d2c2016fe12789a952792150e9bdd3ef3 SHA-256: db0d04060468a4a0170c26c52b3e6266b4a515fcf35abf01d987cc465cb4b42c
154 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.com, which is disguised with a search query for 'Stairway to Heaven tabs bass'. This suggests a phishing or social engineering attempt to direct users to malicious content. The PDF also hosts a large number of external links, many pointing to Shopify, which is characteristic of SEO link farms used to manipulate search engine rankings or distribute malicious content. No scripts were extracted from this sample.

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=stairway+to+heaven+tabs+bass
    • http://files.seetheworld.tours/uploads/1/3/2/8/132815961/bawifutopite.pdf
    • https://cdn.shopify.com/s/files/1/0437/1401/9496/files/45198405142.pdf
    • https://cdn.shopify.com/s/files/1/0450/0973/1734/files/cbse_class_10_english_syllabus_2020_20_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/1071/1971/files/53191945366.pdf
    • https://cdn.shopify.com/s/files/1/0436/0732/6882/files/69478932782.pdf
    • https://cdn.shopify.com/s/files/1/0438/4410/8445/files/causatives_get_have_and_make_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0462/9053/4561/files/atomizing_burner.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/volobufepafolosovi.pdf
    • https://cdn.shopify.com/s/files/1/0434/5528/3350/files/16394920870.pdf
    • https://cdn.shopify.com/s/files/1/0430/3529/5905/files/63087732915.pdf
    • https://cdn.shopify.com/s/files/1/0430/5698/8317/files/oregon_trail_android.pdf
    • https://cdn.shopify.com/s/files/1/0433/8358/6977/files/edgar_allan_poe_gato_preto.pdf
    • https://cdn.shopify.com/s/files/1/0434/1871/4264/files/87785965118.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_off00004330.bin
b92ce56833cff54d6a8acc1d34dcc6c94e5dfe102a09cae9cfab56e2f916b19c
pdf-font-stream PDF embedded font (sfnt) at offset 0x4330 5240 bytes
font_01_sfnt_off00005509.bin
240fa15e067b2885211c4b424e4fb24dab01fcc6e3ad94ddb93ae7161b9be2ab
pdf-font-stream PDF embedded font (sfnt) at offset 0x5509 10612 bytes