Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3c7eae65344fca3…

MALICIOUS

PDF

42.4 KB Created: 2020-08-21 04:33:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 233030b7a3d862abfddd41143eb01fce SHA-1: d3dd97d15a0b13a495e73de329827f32b33c0c11 SHA-256: c3c7eae65344fca3a695a05fb7072e1624ab7ed3b87bb8571b6427a8a61336dd
154 Risk Score

Malware Insights

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

The PDF contains a link disguised as a download for 'Apple music 1. 2. 0 mod apk'. This link, however, redirects to a malicious URL (ttraff.cc) identified as a redirector. The presence of numerous other links to PDFs hosted on cdn.shopify.com suggests a link farm or SEO poisoning tactic to distribute malicious content. The ML classifier strongly indicates maliciousness.

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=apple+music+1.+2.+0+mod+apk
    • http://files.richardfite.com/uploads/1/3/2/6/132680813/c78a10ae.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/87967576867.pdf
    • https://cdn.shopify.com/s/files/1/0428/5543/2348/files/kixukotapetirixutaka.pdf
    • https://cdn.shopify.com/s/files/1/0431/0020/9319/files/nuxuvuzefe.pdf
    • https://cdn.shopify.com/s/files/1/0427/7387/2807/files/www_masrawy_coom.pdf
    • https://cdn.shopify.com/s/files/1/0432/9121/3988/files/aromaticity_antiaromaticity_non_aromaticity.pdf
    • https://cdn.shopify.com/s/files/1/0434/8172/7129/files/lonely_planet_budapest_download.pdf
    • https://cdn.shopify.com/s/files/1/0447/3788/8410/files/autocad_import_scale.pdf
    • https://cdn.shopify.com/s/files/1/0432/3917/8399/files/90468807769.pdf
    • https://cdn.shopify.com/s/files/1/0431/7665/7051/files/moneverozo.pdf
    • https://cdn.shopify.com/s/files/1/0430/3152/7577/files/income_tax_budget_2020_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/7233/1682/files/wastewater_recycling_process.pdf
    • https://cdn.shopify.com/s/files/1/0438/6154/1014/files/xoguwin.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_off000066e2.bin
70275b410e85af71f27454323dbe794675893cce1a775e4f368b225a9acf71df
pdf-font-stream PDF embedded font (sfnt) at offset 0x66E2 5536 bytes
font_01_sfnt_off000079a7.bin
48f6d3193d15594a3dcc11d1cf84030a0650e3374fa26ad59b0b14ddd6aff9bb
pdf-font-stream PDF embedded font (sfnt) at offset 0x79A7 10292 bytes