Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e3f6bad75709f7d…

MALICIOUS

PDF

55.5 KB Created: 2020-08-06 01:16:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3bcaadc81eb818ac4a0f9907953d9a73 SHA-1: 44296d07a4343e7059193e2c13e6b2b9ed1b7438 SHA-256: 1e3f6bad75709f7dc95f506c344e60e7e207f350eb032c62efa62e39fd9841d6
120 Risk Score

Malware Insights

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

The PDF was identified as malicious due to a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, pointing to 'https://ttraff.cc/pify?keyword=learn+mozambique+portuguese+pdf'. Additionally, the PDF_SEO_LINK_FARM heuristic indicates a mass of external links, with 'https://cdn.shopify.com/s/files/1/0431/8740/4968/files/76740402781.pdf' being one of the first identified. The document body contains garbled text but includes the redirector URL, suggesting a lure to external content.

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=learn+mozambique+portuguese+pdf
    • http://files.tegginsummers.com/uploads/1/3/0/7/130776399/pazaxez_ripifofibun_gunixasojibagop_kugopimuw.pdf
    • http://files.newenglandgoodlife.com/uploads/1/3/2/7/132741052/3c08e3dfaa1e889.pdf
    • http://files.deeperintolife.com/uploads/1/3/1/3/131380279/117142.pdf
    • http://files.mbaker-retail.com/uploads/1/3/1/8/131857315/3862878.pdf
    • http://files.radicallyawakenedmasters.com/uploads/1/3/1/6/131636914/rixitazemosiko_xesoxatol_rofebepotuluze_jikukolufog.pdf
    • https://cdn.shopify.com/s/files/1/0431/8740/4968/files/76740402781.pdf
    • https://cdn.shopify.com/s/files/1/0433/5425/9606/files/rawazajodixan.pdf
    • https://cdn.shopify.com/s/files/1/0431/0990/8637/files/24894264368.pdf
    • https://cdn.shopify.com/s/files/1/0440/5175/9269/files/physiology_of_microorganisms.pdf
    • https://cdn.shopify.com/s/files/1/0431/8976/4245/files/kobaser.pdf
    • https://cdn.shopify.com/s/files/1/0431/5152/4001/files/tamil_alphabets_chart_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/3492/7513/files/lakebelexusenovazunido.pdf
    • https://cdn.shopify.com/s/files/1/0433/5897/8207/files/tudamebidoluzonagobi.pdf
    • https://cdn.shopify.com/s/files/1/0429/8801/1673/files/business_meeting_agenda_sample.pdf
    • https://cdn.shopify.com/s/files/1/0431/2465/4241/files/watch_bride_wars_online.pdf
    • https://cdn.shopify.com/s/files/1/0429/6713/8470/files/61719440714.pdf
    • https://cdn.shopify.com/s/files/1/0434/7238/8249/files/fuxobazezadaj.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_off00008c51.bin
3e0dcffe5336c9d71718a7ad9acd701055bd7cb6958d0f904b4cc552f0b0c164
pdf-font-stream PDF embedded font (sfnt) at offset 0x8C51 5468 bytes
font_01_sfnt_off00009ec5.bin
18f61ca832270fb73a43c3b80e89d61a10ea4af07464dff7615739585a9377fe
pdf-font-stream PDF embedded font (sfnt) at offset 0x9EC5 10472 bytes
font_02_sfnt_off0000c292.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0xC292 4324 bytes