Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f796a6c67884ea4…

MALICIOUS

PDF

34.6 KB Created: 2020-08-09 11:57:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 624e1bfc2e9b99d2f5a7f91b94a00185 SHA-1: 160777870bbd3f4b43c857d037c5137609d7481f SHA-256: 7f796a6c67884ea4e77fdaf1f649fb2314eb0a292d0c86fe8e367808ab11227d
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link and a link farm, indicating a phishing or scam attempt. The document body, though heavily obfuscated, contains text that appears to be a lure for 'Aitsl professional teaching standards pdf'. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to a malicious site. 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.ru/pify?keyword=aitsl+professional+teaching+standards+pdf
    • http://files.dynamicfunctionalfitnessllc.com/uploads/1/3/1/6/131636719/8675810.pdf
    • http://files.moring-sandojo.com/uploads/1/3/0/7/130776487/bikeju_jitufolenag_totumom_judiw.pdf
    • http://files.nxtgenerationenergy.com/uploads/1/3/2/7/132740415/sodegebu.pdf
    • http://files.design-your-self.com/uploads/1/3/0/8/130874627/zezekiviwaxal_ragajadikofesaf_zidoxerigusefu_ferepitofivuwe.pdf
    • http://files.parkforestmagnet.org/uploads/1/3/1/3/131379111/josexagoxa.pdf
    • https://cdn.shopify.com/s/files/1/0431/2042/7157/files/wizaw.pdf
    • https://cdn.shopify.com/s/files/1/0432/0650/8701/files/simajakagi.pdf
    • https://cdn.shopify.com/s/files/1/0430/2353/2195/files/bash_random_string.pdf
    • https://cdn.shopify.com/s/files/1/0431/1603/6249/files/86197148184.pdf
    • https://cdn.shopify.com/s/files/1/0428/4756/8039/files/tatuxegudimu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pesaveput.pdf
    • https://cdn.shopify.com/s/files/1/0431/6318/9412/files/harvest_moon_rom.pdf
    • https://cdn.shopify.com/s/files/1/0444/6637/2775/files/best_answers_to_202_job_interview_questions.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/44411244229.pdf
    • https://cdn.shopify.com/s/files/1/0433/9875/8557/files/purekezikoxasu.pdf
    • https://cdn.shopify.com/s/files/1/0430/2045/1997/files/54275996466.pdf
    • https://cdn.shopify.com/s/files/1/0432/0041/3856/files/bizuneturu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/52876055892.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pewobaropelizovijekozuji.pdf
    • https://cdn.shopify.com/s/files/1/0431/3343/6071/files/vadabadi.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_off00004b2d.bin
666fbf27cf793f9eae560f0cf66da37c1f21353f26b55b7900d8d25087ffae29
pdf-font-stream PDF embedded font (sfnt) at offset 0x4B2D 5408 bytes
font_01_sfnt_off00005d86.bin
85b9a931cab89c0f2de9050d8ace868935c8f28bb480ec9a476ca81242f64833
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D86 9200 bytes