Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c1fa9ae97bebfbf…

MALICIOUS

PDF

45.1 KB Created: 2020-08-18 20:43:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ba87be05815e4b5af7dc81ba0736c31 SHA-1: 839c79947f86775398f78d0cbe23519a8fd7e1cd SHA-256: 4c1fa9ae97bebfbf832c4f51e20d973a9dec3309bbe680519c3f036d62e4687b
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDFs hosted on platforms like Shopify. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=akele+tanha+status+video+song'. This suggests the document is designed to lead users to malicious infrastructure, likely for phishing or to download further malware. The presence of a link farm and a malicious redirector strongly indicates a malicious intent.

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.ru/pify?keyword=akele+tanha+status+video+song
    • http://gavajil.thealmaproject4kids.com/uploads/1/3/0/7/130776485/7291118.pdf
    • http://files.zainabhardware.com/uploads/1/3/2/3/132302872/midibek-vawexotugimosem-zuzaxefedokuza.pdf
    • https://cdn.shopify.com/s/files/1/0435/0319/0181/files/sutij.pdf
    • https://cdn.shopify.com/s/files/1/0429/2427/7923/files/mobixexabuwejifirure.pdf
    • https://cdn.shopify.com/s/files/1/0431/9543/3117/files/imlers_poultry_outlet.pdf
    • https://cdn.shopify.com/s/files/1/0433/8289/8840/files/raduvij.pdf
    • https://cdn.shopify.com/s/files/1/0433/5989/5717/files/refowekonirofinilokuvimad.pdf
    • https://cdn.shopify.com/s/files/1/0435/6957/8147/files/stardew_valley_item_ids.pdf
    • https://cdn.shopify.com/s/files/1/0432/2040/2343/files/latatisile.pdf
    • https://cdn.shopify.com/s/files/1/0437/9174/5175/files/etat_rapprochement_bancaire_exercice_corrig.pdf
    • https://cdn.shopify.com/s/files/1/0428/6958/8124/files/que_es_un_diagnostico_empresarial.pdf
    • https://cdn.shopify.com/s/files/1/0433/7395/3187/files/banking_awareness.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_off000048ef.bin
cbf8f3619e9240b1a07b9983cb0cf1d01ae786c35df35c901e73bb0b5b8646f0
pdf-font-stream PDF embedded font (sfnt) at offset 0x48EF 4984 bytes
font_01_sfnt_off000059d7.bin
e8def34ef7fa1cd1e737aa53281a1ad4be732a20e453453846aa670fb207f4af
pdf-font-stream PDF embedded font (sfnt) at offset 0x59D7 2044 bytes
font_02_sfnt_off00006343.bin
d157126e197c92562476efe79957032b9fef525580d508926bcd778b0bdac5b4
pdf-font-stream PDF embedded font (sfnt) at offset 0x6343 9912 bytes
font_03_sfnt_off00008441.bin
d78d7cc1a68daa951b4fbccbcfb906d5a08ad384f187125596154666a45abe72
pdf-font-stream PDF embedded font (sfnt) at offset 0x8441 16060 bytes
font_04_sfnt_off000098d6.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x98D6 4324 bytes