Malicious PDF — malware analysis report

Static analysis result for SHA-256 4103b1914b5e9a3c…

MALICIOUS

PDF

52.8 KB Created: 2020-08-17 03:13:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 87ae0760a2a4aacd88dbc9fbeed90b58 SHA-1: 27ce9790247f048a84bb3b6c305dcac1ea612727 SHA-256: 4103b1914b5e9a3c276318cde30fd425fec8e06177ab9e56b6e88099549845c5
120 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to PDFs hosted on Shopify and other domains. One of these links, https://ttraff.cc/pify?keyword=kavacham+argala+kilak+pdf, is identified as a malicious redirector. This suggests the document is part of a link farm designed to lure users to malicious infrastructure. No scripts were extracted, and the document body was largely unreadable binary data, limiting further analysis of the exact payload.

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.cc/pify?keyword=kavacham+argala+kilak+pdf
    • http://xivunazar.protectgladewatershed.com/uploads/1/3/0/8/130873995/1292402.pdf
    • http://files.threadwood.com/uploads/1/3/0/9/130969469/xiludabelali.pdf
    • http://figer.speechtherapypartners.com/uploads/1/3/1/4/131453384/vunafuke.pdf
    • https://cdn.shopify.com/s/files/1/0428/3957/2643/files/26997478855.pdf
    • https://cdn.shopify.com/s/files/1/0429/6255/0940/files/balanced_scorecard_strategy_for_dummies.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rofimoluxita.pdf
    • https://cdn.shopify.com/s/files/1/0434/9011/5748/files/79215614589.pdf
    • https://cdn.shopify.com/s/files/1/0431/5463/6966/files/jopaketi.pdf
    • https://cdn.shopify.com/s/files/1/0432/3514/7933/files/firevuvejuvunotirozod.pdf
    • https://cdn.shopify.com/s/files/1/0428/2214/0063/files/11194031445.pdf
    • https://cdn.shopify.com/s/files/1/0433/4541/2261/files/pibadabuwimuwadurusi.pdf
    • https://cdn.shopify.com/s/files/1/0437/6972/5080/files/zorij.pdf
    • https://cdn.shopify.com/s/files/1/0431/4261/1095/files/ketogene_ernhrung_lebensmittel.pdf
    • https://cdn.shopify.com/s/files/1/0452/3737/1037/files/radial_engine_assembly.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_off00006500.bin
125b5c22f4a1ef718570affcca2a45ab4d366e2f2de855a218d20b5fe9bde086
pdf-font-stream PDF embedded font (sfnt) at offset 0x6500 4860 bytes
font_01_sfnt_off0000757b.bin
569a1d1e64d6081599e57f9eb5e6f6c09bfa75e501bb2f51714659b29f4c7983
pdf-font-stream PDF embedded font (sfnt) at offset 0x757B 10048 bytes
font_02_sfnt_off000097e2.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0x97E2 4324 bytes
font_03_sfnt_off0000a5e3.bin
a7a430c91cd966cf9e9b2b088e38f612ef472ead472c3f4c3bfdb1eb409d8314
pdf-font-stream PDF embedded font (sfnt) at offset 0xA5E3 9924 bytes