Malicious PDF — malware analysis report

Static analysis result for SHA-256 56f38ece523c5a14…

MALICIOUS

PDF

38.9 KB Created: 2020-08-19 23:29:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 67f45b0f7ba3d9b6d3cb8bf3c41a44f5 SHA-1: d08a9ebefba30adf2414a87de867b999e59fe070 SHA-256: 56f38ece523c5a14a75c92b42603c9bccfb09652cf2587bade6aa9f1d7a472ba
120 Risk Score

Malware Insights

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

The PDF document contains a deceptive title and numerous embedded links, including one pointing to a known malicious redirector. The primary attack pattern involves luring users to malicious infrastructure by masquerading as a legitimate document. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of specific payloads.

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=rubbish+chute+installation+guide
    • http://files.lotsofbundlez.com/uploads/1/3/2/6/132695301/sizawusojexo.pdf
    • https://cdn.shopify.com/s/files/1/0432/3350/9535/files/abnormal_psychology_kring_13th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0429/7474/0639/files/laleg.pdf
    • https://cdn.shopify.com/s/files/1/0435/1718/2104/files/lizozogojaxolejozimeforuk.pdf
    • https://cdn.shopify.com/s/files/1/0437/9030/3393/files/lathem_atomic_time_clock_1600e_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/5649/6794/files/55808947019.pdf
    • https://cdn.shopify.com/s/files/1/0429/9866/1279/files/kiparidetumivovos.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31240515614.pdf
    • https://cdn.shopify.com/s/files/1/0447/6023/6183/files/lafepirofetelojasadib.pdf
    • https://cdn.shopify.com/s/files/1/0435/9228/6363/files/rasutuwufuzuloto.pdf
    • https://cdn.shopify.com/s/files/1/0431/2668/5850/files/alif_ba_ta_flash_card.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005be2.bin
57057590dd6a73bb56205683801282cde6bb4779f78bdb0827a275d451a82687		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BE2 5252 bytes
font_01_sfnt_off00006daf.bin
c4ce4ab4cd20f623e84b4a354a7e9596794ce5925b6cd5d3d2920edb45b34833		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DAF 9716 bytes

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