Malicious PDF — malware analysis report

Static analysis result for SHA-256 48d78fa4f00197b6…

MALICIOUS

PDF

58.7 KB Created: 2020-08-12 00:56:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 97e86b4cd92e9689963a22c3f97f99a6 SHA-1: 7fd54a896a36bae58f38c6c94646a0ab71633609 SHA-256: 48d78fa4f00197b6dfca5d030cf53328ecbe7c1e74de0808bc347e8745b8a0ef
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body as a lure for a "12th zoology book in english pdf". The link redirects to `https://ttraff.cc/pify?keyword=12th+zoology+book+in+english+pdf`, indicating a phishing or scam attempt. The presence of a mass external PDF link farm further supports the malicious intent, likely for SEO poisoning or distributing malicious content.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=12th+zoology+book+in+english+pdf
    • http://xumowe.georgecedwardsiii.com/uploads/1/3/0/8/130874254/07f46f.pdf
    • http://files.soundsliketwotrx.com/uploads/1/3/1/6/131606552/vekesenarefe.pdf
    • http://files.amazingdownunder.com/uploads/1/3/2/7/132712206/bezulozobufij.pdf
    • https://cdn.shopify.com/s/files/1/0434/0239/5813/files/50125571530.pdf
    • https://cdn.shopify.com/s/files/1/0431/2173/7882/files/31551425151.pdf
    • https://cdn.shopify.com/s/files/1/0435/5732/2903/files/honda_gcv160_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/5319/5165/files/cabin_in_the_woods_online.pdf
    • https://cdn.shopify.com/s/files/1/0437/5399/6442/files/2020_basic_english_words.pdf
    • https://cdn.shopify.com/s/files/1/0447/3847/8229/files/dijabofifidiwalosaxigav.pdf
    • https://cdn.shopify.com/s/files/1/0434/5652/8541/files/xolojinemuxojevalamezofu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0938/4345/files/a_level_chemistry_e_n_ramsden.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/19194700937.pdf
    • https://cdn.shopify.com/s/files/1/0430/6544/2457/files/fepuvofilizugirowe.pdf
    • https://cdn.shopify.com/s/files/1/0429/1795/3702/files/iterative_inorder_traversal.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00007e7f.bin
0bc2951014633c49ddddcac624331b800f761c57d1aa491ff268a6f940645022		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x7E7F 16552 bytes
font_00_sfnt_off00006ca8.bin
03f54dd10529323564bfa0152814c04ff3def450bdd98da8072e69cc9255afe4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CA8 5232 bytes
font_02_sfnt_off0000a3f7.bin
cefa93ab99268b9387626336cc8aeb986d802f3a091f6156c231f0642977bfab		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA3F7 1852 bytes
font_03_sfnt_off0000acd2.bin
fe7d35a387e8b00a776c5c8bea3b3c8e8990eebfdfed3ce557cdb3bd5171129a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xACD2 10092 bytes
font_04_sfnt_off0000cf33.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCF33 4324 bytes

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