Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa322fa0e5d59002…

MALICIOUS

PDF

60.7 KB Created: 2020-09-16 15:47:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4efa4ced330fdb38121533a24d9dd629 SHA-1: 1e1a29d652a24acf6137a5a0be5fe141f7745a7d SHA-256: fa322fa0e5d590028fa250306f39e001ab8132474bc8a8539896fdf466ab20fd
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic firing indicating a malicious redirector. One prominent link, 'https://ttraff.club/wix?keyword=dekalb+county+marriage+license+copy', is directly presented in the document body, suggesting a social engineering lure. The presence of numerous external PDF links also points towards a link farm or SEO poisoning tactic to distribute malicious content.

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.club/wix?keyword=dekalb+county+marriage+license+copy
    • http://lomekawu.pamelacalore.com/uploads/1/3/0/7/130738870/sikinuferoredoj.pdf
    • http://lekajob.treasureu.net/uploads/1/3/2/8/132814432/silugapudoserun-sikedivamu.pdf
    • http://voludap.logosnola.com/uploads/1/3/1/4/131453150/2990586.pdf
    • http://files.theyarnvault.com/uploads/1/3/1/4/131437595/d12282.pdf
    • https://cdn.shopify.com/s/files/1/0430/4732/1751/files/jarewiposuvomaled.pdf
    • https://cdn.shopify.com/s/files/1/0434/0786/8060/files/rixuluki.pdf
    • https://cdn.shopify.com/s/files/1/0434/6085/3912/files/fuwanamutegine.pdf
    • https://cdn.shopify.com/s/files/1/0435/4359/3109/files/chrome_apk_for_android_5._1.pdf
    • https://cdn.shopify.com/s/files/1/0428/6640/9639/files/locus_score_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/6589/2261/files/90968347003.pdf
    • https://cdn.shopify.com/s/files/1/0437/5566/7605/files/mazepe.pdf
    • https://cdn.shopify.com/s/files/1/0459/3156/1127/files/kufalof.pdf
    • https://918688b0-a20e-4873-bce3-24a3b7364219.filesusr.com/ugd/d5415a_60fc2fd05f344d24b8693a7b6593b23f.pdf?index=true
    • https://7922f628-3d0b-40d8-af9b-0fab3de3c8c9.filesusr.com/ugd/bcc0e4_2658c1015ed24f0cbc4ed4514a31894d.pdf?index=true
    • 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_off0000a3a4.bin
a17885b4fd577e0298a64705d5055d2ac7c2363fd7008e9cf236b3df412a17d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA3A4 2828 bytes
font_01_sfnt_off0000ad9e.bin
7f4db89e74088eb6589b02a81955d52822c37241aa1b08d181d23013e6285f8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAD9E 5556 bytes
font_02_sfnt_off0000c080.bin
c808250a6aec2eae34b66b66b63ca48ce5fd2cda7fc9e89da2b020424ec89d3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC080 10688 bytes

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