Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6986bba78bbe105…

MALICIOUS

PDF

46.5 KB Created: 2020-08-10 20:59:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e89a7009fd29f4db7e568380161e6b6 SHA-1: ca7b9a9084a4562c09926a26be3694ea73deffc2 SHA-256: d6986bba78bbe105646a92bcbbfd9c6f14522116a14ad4f80358c124dff9e115
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to what appears to be a link farm hosted on Shopify. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=bruxismo+infantil+pdf'. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing.

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/pify?keyword=bruxismo+infantil+pdf
    • http://files.bronzedoklahoma.com/uploads/1/3/1/8/131871704/minulogise.pdf
    • http://files.hthncwatershed.org/uploads/1/3/1/1/131163738/sipefepukopevun_gobelol_gavela.pdf
    • http://files.brayleeflaska.com/uploads/1/3/0/7/130776016/d720e1eb4544d8.pdf
    • http://lidufeka.lassealexandersson.com/uploads/1/3/1/8/131857631/8552081.pdf
    • https://cdn.shopify.com/s/files/1/0438/2100/7005/files/the_office_season_1_episode_1_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/5317/0339/files/34747576473.pdf
    • https://cdn.shopify.com/s/files/1/0430/4293/0842/files/cantoral_liturgico_catolico.pdf
    • https://cdn.shopify.com/s/files/1/0435/7973/6223/files/67258788171.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wevola.pdf
    • https://cdn.shopify.com/s/files/1/0433/0507/4838/files/fipob.pdf
    • https://cdn.shopify.com/s/files/1/0455/6849/1685/files/surah_ar_rahman_arab_latin.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3768/files/structure_of_animal_and_plant_viruses.pdf
    • https://cdn.shopify.com/s/files/1/0432/9019/8180/files/7th_economic_census_2020_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0430/9064/1047/files/83559676006.pdf
    • https://cdn.shopify.com/s/files/1/0431/8176/8864/files/vibuvujefuzemo.pdf
    • https://cdn.shopify.com/s/files/1/0452/3006/3773/files/bank_exam_question_and_answer_download.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068a4.bin
8d2ea56ad651030c97e0b3c8ba3ba9dc7d184cc2b29b8cac775106d80e392c25
pdf-font-stream PDF embedded font (sfnt) at offset 0x68A4 5068 bytes
font_01_sfnt_off000079c3.bin
c7e69671cc45aac343d290b8d822fe1938923d8b77994ad4c2109bbf7dd61539
pdf-font-stream PDF embedded font (sfnt) at offset 0x79C3 10956 bytes
font_02_sfnt_off00009d3c.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x9D3C 4324 bytes