Malicious PDF — malware analysis report

Static analysis result for SHA-256 d701475c36e4c4fc…

MALICIOUS

PDF

54.1 KB Created: 2020-08-09 12:33:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ac22fa8b96d06b926363b5f6645d83b9 SHA-1: ac1137d15b3997f3e3c9554b2d81c0f5f0df1d9e SHA-256: d701475c36e4c4fc52be37d0d583f550ed8b2f0d24c4c826253f161b16349af1
160 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=ba+first+year+book+pdf'. Additionally, it exhibits a PDF link farm behavior, with numerous links pointing to Shopify-hosted PDFs. The document body, though heavily obfuscated, contains the same malicious URL and references to PDF files, reinforcing the lure. The heuristic 'SE_MFA_LURE' suggests the intent is to harvest credentials or abuse multi-factor authentication, likely by directing the user to a phishing page via the embedded link.

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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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.ru/pify?keyword=ba+first+year+book+pdf
    • http://files.glenelgcp.com/uploads/1/3/1/4/131407530/3953484.pdf
    • http://files.seedsforchangewellness.com/uploads/1/3/1/8/131856271/f866beb8a9e6.pdf
    • http://files.dns-for-me.org/uploads/1/3/1/8/131857758/vexix_visaxuge_zopawe.pdf
    • http://files.napfamily.com/uploads/1/3/0/8/130814283/dinolopiga-pizekuvabilipo-bemulizojorebe.pdf
    • http://files.sherricornett.com/uploads/1/3/1/4/131407214/eeb9c948abe.pdf
    • https://cdn.shopify.com/s/files/1/0436/4104/5145/files/arabic_text_to_word_converter.pdf
    • https://cdn.shopify.com/s/files/1/0432/7587/8564/files/86452122932.pdf
    • https://cdn.shopify.com/s/files/1/0430/1714/2433/files/71556144665.pdf
    • https://cdn.shopify.com/s/files/1/0439/0069/8792/files/retorika_book.pdf
    • https://cdn.shopify.com/s/files/1/0429/0481/3721/files/87411778893.pdf
    • https://cdn.shopify.com/s/files/1/0428/3134/7868/files/warhammer_40k_8th_edition_codex_download_free.pdf
    • https://cdn.shopify.com/s/files/1/0450/8853/8776/files/lactometer_reading_of_milk.pdf
    • https://cdn.shopify.com/s/files/1/0439/3166/4552/files/keranis.pdf
    • https://cdn.shopify.com/s/files/1/0432/1103/0690/files/1383055150.pdf
    • https://cdn.shopify.com/s/files/1/0438/1242/1789/files/10127972201.pdf
    • https://cdn.shopify.com/s/files/1/0429/9603/9839/files/66607979710.pdf
    • https://cdn.shopify.com/s/files/1/0433/9027/1642/files/moketoremikod.pdf
    • https://cdn.shopify.com/s/files/1/0428/8951/1068/files/58645250220.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006982.bin
88e928b280409bf5240e7f3d9e0b01ef1380e82f89d7adb8f0bc255a49f62a78		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6982 5356 bytes
font_01_sfnt_off00007bd3.bin
82c047ac093810968bc043e1395e19a776fddf61b5ae473d26a3e46c73460b1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BD3 2596 bytes
font_02_sfnt_off00008756.bin
5e067315a2bd9524b6254977960f062bb129990ed69868068e29b4596197f3c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8756 2320 bytes
font_03_sfnt_off000091a9.bin
418e3545ed966b8650945aee198494205450118f92552579544a2c71e61c5056		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91A9 10184 bytes
font_04_sfnt_off0000b4ac.bin
a349519ccbdbca3d75704c2becf615ab37801eb1543272228454131dceb83acc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB4AC 16224 bytes

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