Malicious PDF — malware analysis report

Static analysis result for SHA-256 aaa5da013f05e5a0…

MALICIOUS

PDF

65.6 KB Created: 2020-08-16 00:57:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 56d08ed8b14913b8b86c74b861259d04 SHA-1: 774ca77f6e59638343251311005ade132ce78833 SHA-256: aaa5da013f05e5a0db7448b3203ad0f2049259190344e4cc3b83d55453d354cc
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which are disguised as legitimate PDF files hosted on Shopify. These links ultimately redirect to a malicious URL, specifically 'https://ttraff.com/pify?keyword=android+objectanimator+set'. This technique is commonly used to obscure the final malicious destination and to leverage seemingly benign domains for initial distribution. No scripts were extracted from this sample.

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=android+objectanimator+set
    • http://files.thesaxsmith.com/uploads/1/3/1/4/131453574/273a0683.pdf
    • http://files.truthfoundhere.com/uploads/1/3/1/4/131453146/rilawoberodefux.pdf
    • http://kedixe.janeandjohnqpublic.com/uploads/1/3/1/8/131871390/rukid-fadutobalovata-givogu-vigimasuneva.pdf
    • https://cdn.shopify.com/s/files/1/0431/3248/5793/files/zimurabekevijenul.pdf
    • https://cdn.shopify.com/s/files/1/0434/7127/4146/files/44429792582.pdf
    • https://cdn.shopify.com/s/files/1/0437/1133/2507/files/ncert_biology_book_class_12.pdf
    • https://cdn.shopify.com/s/files/1/0430/8546/3713/files/the_norton_anthology_of_short_fiction.pdf
    • https://cdn.shopify.com/s/files/1/0438/5685/5190/files/cm_relief_fund_application_form_andhra_pradesh.pdf
    • https://cdn.shopify.com/s/files/1/0433/4993/4231/files/80912461503.pdf
    • https://cdn.shopify.com/s/files/1/0429/7375/7603/files/mass_effect_andromeda_walkthrough.pdf
    • https://cdn.shopify.com/s/files/1/0430/0803/2922/files/mefanobilisasuvurotam.pdf
    • https://cdn.shopify.com/s/files/1/0428/6421/4175/files/40989364832.pdf
    • https://cdn.shopify.com/s/files/1/0431/2901/2381/files/zawopajudulubuvomugexo.pdf
    • https://cdn.shopify.com/s/files/1/0438/4695/9261/files/anatomy_stomach.pdf
    • https://cdn.shopify.com/s/files/1/0433/2588/2520/files/23093643000.pdf
    • https://cdn.shopify.com/s/files/1/0435/2743/8488/files/biwusuti.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006cb1.bin
b026b3d55758a83836910dd1e793d77c08f3d1fb3acb33f422bebb1b3fd374cd
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CB1 18340 bytes
font_01_sfnt_off0000a6f1.bin
1adf2c5843b096dae30119cfb1fb9e0a61b79cecc01ccaca10d3962d00342a0d
pdf-font-stream PDF embedded font (sfnt) at offset 0xA6F1 5260 bytes
font_02_sfnt_off0000b8ae.bin
d67b1a6a3e5c985f48e0849fcfe4fe1c923c2bf5393c53dc09757fc32bff37dd
pdf-font-stream PDF embedded font (sfnt) at offset 0xB8AE 13816 bytes
font_03_sfnt_off0000e476.bin
354dce64f07f3d7acdf6a04edf763950ffbfec4edcbb4bfe17b65a83544077bb
pdf-font-stream PDF embedded font (sfnt) at offset 0xE476 16036 bytes