Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef1fcc3a03d1fede…

MALICIOUS

PDF

40.8 KB Created: 2020-08-17 06:55:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e13dd7d97aebda3c8c833f7362cbb108 SHA-1: 7ffaec72ae2cc575401e7f86ba2305d4c4df4bf6 SHA-256: ef1fcc3a03d1fede9bde6d623bef731215edb547ea3d0feb601f87967fdb206c
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs, many hosted on Shopify. The document body, though heavily obfuscated, contains the malicious URL and references to other PDF files. The primary attack vector appears to be social engineering via a deceptive link, likely leading to a phishing or malware distribution site.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=blackjack+bold+font+free
    • http://ramut.noyeslibraryfoundation.org/uploads/1/3/0/7/130739964/wiluluxatope_demiboludilolif.pdf
    • http://files.standepiscopal.org/uploads/1/3/1/3/131384436/powilim_nixuvikefowu_wagipamilo.pdf
    • http://files.rtdresssing.com/uploads/1/3/1/3/131380759/tuzovereled.pdf
    • https://cdn.shopify.com/s/files/1/0429/9204/2137/files/87841049541.pdf
    • https://cdn.shopify.com/s/files/1/0440/8049/6792/files/cultivo_de_cebolla_china.pdf
    • https://cdn.shopify.com/s/files/1/0427/9477/8791/files/lotovomiduwutux.pdf
    • https://cdn.shopify.com/s/files/1/0430/4257/0402/files/kibuli.pdf
    • https://cdn.shopify.com/s/files/1/0431/5791/3749/files/bigaj.pdf
    • https://cdn.shopify.com/s/files/1/0438/8870/5688/files/the_frostrune_walkthrough.pdf
    • https://cdn.shopify.com/s/files/1/0431/8432/4770/files/29137533734.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/76102764406.pdf
    • https://cdn.shopify.com/s/files/1/0430/8425/1285/files/1695719079.pdf
    • https://cdn.shopify.com/s/files/1/0437/6464/6049/files/77776725346.pdf
    • https://cdn.shopify.com/s/files/1/0431/1767/4656/files/shawn_mendes_show_you.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_off00005522.bin
a4eee3438a7246650f0a21218a9bc29d7bc7bf1b287bce9df301f714692068dd
pdf-font-stream PDF embedded font (sfnt) at offset 0x5522 2960 bytes
font_01_sfnt_off00005fa6.bin
93fe44d60777b6ea57939fea11bae7a53e8509078646c8f0e5b0f7efce1365a1
pdf-font-stream PDF embedded font (sfnt) at offset 0x5FA6 5164 bytes
font_02_sfnt_off00007141.bin
535114a67f592beaee48ee97d17846351c9d2ec1ae17d1619c421104557d4cba
pdf-font-stream PDF embedded font (sfnt) at offset 0x7141 10756 bytes