Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fd8cc263a51eab8…

MALICIOUS

PDF

35.5 KB Created: 2020-08-18 20:13:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68939a89eeaf547e72c21dfa1cde7006 SHA-1: 798c76905f7e05321a6b6c572303486ebfb24955 SHA-256: 1fd8cc263a51eab8addcd185232579de8ffb18cd10d5c8eef99ceb864d0dbc93
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a large number of embedded links, forming a link farm. One critical heuristic flagged a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=miffed+crossword+answer'. The document body contains garbled text but also includes several URLs, some of which are hosted on Shopify and appear benign, while others are hosted on various unknown domains and are likely part of the malicious infrastructure. The primary attack pattern involves luring users to click on these links, which likely lead to phishing pages or malware downloads.

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=miffed+crossword+answer
    • http://fabijevo.blockdata4good.com/uploads/1/3/0/9/130969204/pesotofa.pdf
    • http://furide.tristannmortimer.com/uploads/1/3/1/6/131606758/2f69374e.pdf
    • http://dikositoz.deverelementary.com/uploads/1/3/2/7/132740214/zadepawogusiponimaru.pdf
    • http://ropaseken.uhsbe.org/uploads/1/3/0/7/130776791/kibejosudazad-kefujesal-fipijozunerodad-bawoxer.pdf
    • http://kiboxotel.nicholasadamswrites.com/uploads/1/3/1/6/131637881/nefamuneweju.pdf
    • https://cdn.shopify.com/s/files/1/0427/5296/6812/files/lejobi.pdf
    • https://cdn.shopify.com/s/files/1/0430/0737/7561/files/goluditesa.pdf
    • https://cdn.shopify.com/s/files/1/0431/4211/9592/files/naroridotuzojobirutoraket.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/moral_leadership_definition.pdf
    • https://cdn.shopify.com/s/files/1/0430/9568/7328/files/texas_title_transfer_form_130_u.pdf
    • https://cdn.shopify.com/s/files/1/0438/4430/5046/files/xexapibovukizegelezime.pdf
    • https://cdn.shopify.com/s/files/1/0431/1007/2481/files/dungeon_master_s_guide_3._5e.pdf
    • https://cdn.shopify.com/s/files/1/0435/1413/4692/files/mitimupivutitego.pdf
    • https://cdn.shopify.com/s/files/1/0434/3490/1671/files/rawurewasaxogamikugerin.pdf
    • https://cdn.shopify.com/s/files/1/0435/9625/1304/files/pogunetulijixidazoxoze.pdf
    • https://cdn.shopify.com/s/files/1/0438/1107/8301/files/nj_1040nr_instructions.pdf
    • https://cdn.shopify.com/s/files/1/0437/1972/1115/files/ap_biology_textbook_campbell_11th_edition.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_off00004d88.bin
08037ff3b0253355b7d121ebe1f17cc4ca2169aeaf7f6668eb35598fd45a84a1
pdf-font-stream PDF embedded font (sfnt) at offset 0x4D88 5080 bytes
font_01_sfnt_off00005ef2.bin
c8f84b250ee3846aafa6a0ba541e1615499b02dd5edeff8c43a96827607f3f2f
pdf-font-stream PDF embedded font (sfnt) at offset 0x5EF2 10024 bytes