Malicious PDF — malware analysis report

Static analysis result for SHA-256 89a552f178e1a6b5…

MALICIOUS

PDF

55.5 KB Created: 2020-08-25 09:01:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7819bda2f9b852e31c5c395961101bdc SHA-1: 87f6c9a52ce86455576fdec4491c12dff5717782 SHA-256: 89a552f178e1a6b586782963e52a01da7e2a9df0f39e2d6a7d8b0687a99d847a
128 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which in turn points to a Shopify URL hosting a PDF. The document body also contains the text '1998 cam vintage camera apk indir' and a direct link to the ttraff.ru URL, suggesting a lure to download an Android application. The presence of numerous other PDF links indicates a link farm strategy, likely to improve SEO for malicious content.

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.ru/pify?keyword=1998+cam+vintage+camera+apk+indir
    • http://files.neilmckenzieyouthfishingcontest.org/uploads/1/3/1/6/131606127/1963708.pdf
    • http://lutiso.kgoodies.com/uploads/1/3/2/8/132814930/xawedira.pdf
    • http://files.isabellefournet.com/uploads/1/3/1/6/131606397/zimeziwob.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84113106953.pdf
    • https://cdn.shopify.com/s/files/1/0428/0709/9558/files/18065972275.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wanojexabe.pdf
    • https://cdn.shopify.com/s/files/1/0432/1660/1249/files/tujazuro.pdf
    • https://cdn.shopify.com/s/files/1/0432/8184/2341/files/moketozobikubag.pdf
    • https://cdn.shopify.com/s/files/1/0436/9724/2280/files/74852835051.pdf
    • https://cdn.shopify.com/s/files/1/0436/0011/7928/files/batch_convert_files_to.pdf
    • https://cdn.shopify.com/s/files/1/0431/9726/8128/files/gudepewupetotudobam.pdf
    • https://cdn.shopify.com/s/files/1/0430/4420/8797/files/xatiwukiwanirejo.pdf
    • https://cdn.shopify.com/s/files/1/0429/6084/7004/files/experiencing_mis_5th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0429/0609/1673/files/roblox_exploits_for_mac.pdf
    • https://cdn.shopify.com/s/files/1/0438/1406/0189/files/wivun.pdf
    • https://cdn.shopify.com/s/files/1/0434/1733/8005/files/http_azaforum_com_patchs_2058w.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 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005eb7.bin
4e1a9c4cb32f1bc4ff176ae4dc1460c31b2d267bf2def0252f23ad2731e7be72		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EB7 6588 bytes
font_01_sfnt_off00006eff.bin
0b5e2232e287906fa69f7cdc51ab19c8c92147b2e4fba8c5edcc65ed17d50ef2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EFF 3064 bytes
font_02_sfnt_off000079ca.bin
05ae2645af7ad3bea8d07db208ea5f096dae13cf62fe61ba773ab8602497f94e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79CA 5612 bytes
font_03_sfnt_off00008ccf.bin
c879d4b0210e847162f2c6d686728d124bd1d841235a0c83932700cac93a3561		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CCF 1852 bytes
font_04_sfnt_off000095c1.bin
9203baf713a14d9059a1afa6b1ec3b857d6f8e7a19a3ce39f166d990c4012302		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95C1 10684 bytes
font_05_sfnt_off0000ba76.bin
f086b88447a946c61ffce955927b196beea3a942eae13b03f33c4a2782dddfd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBA76 16136 bytes

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