Malicious PDF — malware analysis report

Static analysis result for SHA-256 86453277eb2d2adb…

MALICIOUS

PDF

45.5 KB Created: 2020-08-15 14:38:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 556cb43749b64d78e55b9b2c1703975c SHA-1: 8a63f28f2eaf8fc1d662032ffd9b9eac45c3ceba SHA-256: 86453277eb2d2adbca50d832bc0f69800fd8f008bf55f77a404585de8bbe3d44
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a large number of embedded links, identified as a PDF SEO link farm, with the primary malicious redirector pointing to 'https://ttraff.com/wb?keyword=calendar%202019%20with%20weeks%20pdf'. This suggests a social engineering attempt to trick users into visiting potentially harmful sites. No scripts were extracted, but the PDF structure and embedded links strongly indicate a malicious intent to redirect users.

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/wb?keyword=calendar%202019%20with%20weeks%20pdf
    • http://files.dreammasterbuild.com/uploads/1/3/1/1/131163740/zowoxodiwekef-paguxumutuv-jinozanuve.pdf
    • http://files.shannoncangey.com/uploads/1/3/2/6/132681772/muteworizil.pdf
    • http://riguvudek.littlehandsomez.com/uploads/1/3/0/7/130740496/poratapiduzasuz-lonigitinab.pdf
    • http://files.anonymityfilms.com/uploads/1/3/1/4/131437123/c9805dc2510.pdf
    • http://sivozab.ristorantepizzeriacasamatta.com/uploads/1/3/1/4/131453870/zujedomis.pdf
    • https://cdn.shopify.com/s/files/1/0440/7299/2918/files/58439231550.pdf
    • https://cdn.shopify.com/s/files/1/0440/7066/6392/files/33803074426.pdf
    • https://cdn.shopify.com/s/files/1/0433/5036/0232/files/71830429182.pdf
    • https://cdn.shopify.com/s/files/1/0428/2017/3983/files/wejanomijugibebipubenexor.pdf
    • https://cdn.shopify.com/s/files/1/0447/9628/0993/files/psychology_articles_on_human_behavior.pdf
    • https://cdn.shopify.com/s/files/1/0430/1363/6259/files/gujagozazafoloba.pdf
    • https://cdn.shopify.com/s/files/1/0427/9628/6119/files/mass_incarceration_in_the_us.pdf
    • https://cdn.shopify.com/s/files/1/0427/8986/3580/files/65529855258.pdf
    • https://cdn.shopify.com/s/files/1/0433/8004/8037/files/concept_of_spatial_frequency_filtering.pdf
    • https://cdn.shopify.com/s/files/1/0433/7061/0851/files/neo_bomberman_game_free_for_pc.pdf
    • https://cdn.shopify.com/s/files/1/0434/6799/7344/files/pdf_to_word_converter_free_with_crack.pdf
    • https://cdn.shopify.com/s/files/1/0434/7274/8710/files/6666941989.pdf
    • https://cdn.shopify.com/s/files/1/0431/1102/2756/files/vuzononewejeladu.pdf
    • https://cdn.shopify.com/s/files/1/0434/7691/0242/files/byu_housing_guide.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_off0000723c.bin
d367fb588c7f4d15c4cf9220fb8c8d8dd8f1612a9d229d19ce9fc85c117fea77
pdf-font-stream PDF embedded font (sfnt) at offset 0x723C 5672 bytes
font_01_sfnt_off00008597.bin
656f23fea00e6b6f5409adf8049005744692767bec44dd4bc52afc413461830c
pdf-font-stream PDF embedded font (sfnt) at offset 0x8597 10360 bytes