Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c708155c88e1992…

MALICIOUS

PDF

44.1 KB Created: 2020-08-02 10:44:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 27fe04af37543c72ba5901a09eda0116 SHA-1: 69213cf0114ca007c8236e36530929af645917a1 SHA-256: 2c708155c88e1992d4f2648375f350519635667c7c3b3e48d946946668117634
154 Risk Score

Malware Insights

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

The PDF contains a link farm designed to direct users to malicious infrastructure, specifically the URL https://ttraff.com/pify?keyword=open+all+interiors. This is supported by the PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM heuristics. The ML classifier also strongly indicated maliciousness. No scripts were extracted, and the document body was heavily obfuscated, but the presence of the link farm and redirector URL strongly suggests a phishing or redirection attack.

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=open+all+interiors
    • http://files.mrhso.org/uploads/1/3/0/7/130738559/b04139ca976590.pdf
    • http://files.kwik-fix.co.uk/uploads/1/3/1/4/131455463/misosamisoti_texonebuxomid.pdf
    • http://files.dodiaspora.org/uploads/1/3/2/8/132815181/8593700fb14.pdf
    • http://files.jaegercounseling.com/uploads/1/3/1/4/131406337/junodilukuvo_ligun.pdf
    • https://cdn.shopify.com/s/files/1/0431/8406/2622/files/jevibojusoroxebalanobanoz.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65545430121.pdf
    • https://cdn.shopify.com/s/files/1/0430/2091/0746/files/kibog.pdf
    • https://cdn.shopify.com/s/files/1/0435/4090/6135/files/asking_alexandria_moving_on_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0428/1312/8867/files/rugexirubodibizosupi.pdf
    • https://cdn.shopify.com/s/files/1/0430/5109/0077/files/kogero.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fofigez.pdf
    • https://cdn.shopify.com/s/files/1/0433/1683/8558/files/faluxufoguwitituzoboku.pdf
    • https://cdn.shopify.com/s/files/1/0437/4321/5767/files/86797601530.pdf
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/gidirofejerusibabobo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dovaxetudomorunuk.pdf
    • https://cdn.shopify.com/s/files/1/0431/2150/8509/files/nuduxibigutawer.pdf
    • https://cdn.shopify.com/s/files/1/0440/3593/2310/files/python_replace_multiple_characters.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_off00006e1a.bin
61b50746f6b1ae05e5f1920fcd5d414ae193995a7589aeb778d0a34e225a2e4b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E1A 4840 bytes
font_01_sfnt_off00007e96.bin
396547c91289ade4df4f791930e1dc533711da8035de266764cf57d79f1cb063		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E96 10740 bytes

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